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    • 1. 发明专利
    • Near zero emission exhaust system
    • GB2573124A
    • 2019-10-30
    • GB201806684
    • 2018-04-24
    • ALLAN BROWN
    • ALLAN BROWN
    • B01D53/62B01D46/00B01D53/00B01D53/48B01D53/75B01D53/86B01D53/92C01F11/18F01N3/08
    • A method of producing carbon carbonate from the exhaust 2 of an engine 1 a vehicle (e.g. ship, train trucks) comprises treating the exhaust gas to remove particle matter, sulphur dioxide (SO2) and carbon monoxide (CO); passing the gas through a condenser to separate demineralised water from the gas that is stored in a reservoir 40. The nitrogen/carbon dioxide rich gas is cooled 13 and passed to a catalysed carbon capture system comprising a hydration tank 21 containing water and nickel nanoparticles through which the gas is bubbled and converted to carbonic acid (CO3H2); a separator 32 to remove the nanoparticles; a settling tank 41 where sodium hydroxide (NaOH) and calcium chloride (CaCl2) is added to the acid to produce carbon carbonate at a temperature below 1400 centigrade. The carbonate may be disposed of at sea. The reclaimed water may be used to emulsify the engine’s fuel 16, used as part of a humid air motor system; or used to supply the vehicles water supply e.g. drinking water. Alternatively reactors having microbes, enzymes or electro chemical synthesis of calcium carbonate may be used to capture carbon dioxide. The exhaust gas may also be purified with a CO2 scrubbing device.
    • 2. 发明专利
    • New active platinum-group metal catalysts
    • GB957883A
    • 1964-05-13
    • GB74663
    • 1963-01-07
    • HERBERT CHARLES BROWNCHARLES ALLAN BROWN
    • B01J23/38B01J23/58
    • Finely divided Pt, Pd, Rh, Ru, Os, or Ir, produced (see Division C7) by mixing a solution of the metal salt with a solution of an alkali or alkaline earth metal borohydride, is used as a catalyst in the hydrogenation of unsaturated hydrocarbons and in aromatization processes. In an example, a solution of sodium borohydride in ethanol is added to an aqueous solution of chloroplatinic acid to generate the catalyst. Concentrated hydrochloric acid is then added followed by 1-octene. Further sodium borohydride solution is added to generate hydrogen and effect the hydrogenation. In another example, the hydrogen is introduced from an external source. Further examples refer to the use of the catalyst at 350 DEG C. for the dehydrogenation of methylcyclohexane and n-heptane to produce toluene.ALSO:Finely divided Pt, Pd, Rh, Ru, Os, or Ir is produced by mixing a solution of a salt of the metal with a solution of an alkali metal or alkaline earth metal borohydride. Metal salts referred to are rhodium chloride, ruthenium chloride, palladium chloride, osmic acid, iridium chloride, platinum chloride, sodium chloroplatinate and chloroplatinic acid. Water or ethanol are suitable solvents for the metal salt and water or alcohol are suitable solvents for the borohydride. The finely divided metal may be used as a catalyst for the hydrogenation of unsaturated hydrocarbons and the dehydrogenation of saturated organic compounds (see Division C5). The Specification also refers to the production of Mn, Fe, Co, Ni, or Cu by the addition of its chloride to an alkali metal borohydride.ALSO:A catalyst is prepared by impregnating a high surface area carbon or alumina support with a solution of a salt of Pt, Pd, Rh, Ru, Os, or Ir and treating the impregnated material with a solution of an alkali metal or alakline earth metal borohydride to deposit the platinum group metal. Alternatively the support can be impregnated with the borohydride solution and treated with the solution of the required metal salt.
    • 3. 发明专利
    • Improvements in or relating to the automatic control of temperature
    • GB479836A
    • 1938-02-07
    • GB1584436
    • 1936-06-05
    • ALBERT CALLENDERALLAN BROWN STEVENSONTHOMAS CHESTERS ALCOCKICI LTD
    • G05B11/01G05D23/24
    • 479,836. Automatic control systems. CALLENDER, A., STEVENSON, A. B., ALCOCK, T. C., and IMPERIAL CHEMICAL INDUSTRIES. Ltd. June 5, 1936, Nos. 15844/36 and 12300/37. [Class 38 (iv)] Temperature.-In a system comprising a resistance thermometer 1, Fig. 1, in a Wheatstone bridge and a reversible servomotor 13 governed by a relay 7 responsive to unbalance of the bridge and correcting temperature variations a property of a resistance 3 in the bridge is controlled by a coupling from the means 16 by which a temperature change is compensated so as to be temporarily changed in proportion to the change in compensating effect, the property then tending to a predetermined value corresponding to the desired temperature ; this coupling may also change the property of the resistance in proportion to the rate of change of temperature. The property may also be changed independently by variation of a quantity, such as steam pressure in a heating system, which would cause a change in temperature. The resistance may also be varied in accordance with any desired behaviour of the temperature. As shown in Fig. 1, a cam 51, providing the proportionality, varies the level of liquid in a container 54 according to the change in compensating effect ; a float 55 adjusts the resistance 3 and a capillary connection 57 to a large-capacity container gradually restores the level and resistance to normal. Specification 440,115 is referred to. Fig. 2 shows a hydraulic system comprising spring bellows 61, 62, 66, a constant pressure container 67 and throttling valves 63, 64, 65 as in Specification 468,176 adapted to alter the resistance 3 in the manner set forth. A mechanical method is shown in Fig. 3. The cam 51 acts upon a lever 74 directly, or through a spring 71 against a dashpot 73 if the rate of change effect is required ; the lever 74 turns on a pivot supported by an adjustable dashpot 75 and the other end adjusts the resistance 3 and is constrained by one or two springs 78, 79 to return to its normal position after displacement. Fig. 4 includes an electrical method of restoring the setting of resistance 3. The cam 51, an induction disc 88, and a shaft 90 are interconnected through a differential 81. The shaft controls the resistance 3 and also the energization of the disc 88, by displacing a contact on a potentiometer 83 ; the potentiometer is bodily adjustable to determine the temperature setting. Fig. 5 shows means whereby an auxiliary current in the resistance 3 is varied in accordance with the change in temperature compensation. The voltage of the grid P of a valve 4 wording on the straight part .of its characteristic is normally determined by a battery 25 and is temporarily changed, according to the change in compensating effect caused when the relay 7 adjusts the compensating means 16, by movement of a potentiometer contact X connected to the grid through a, condenser 22 ; means 17 provide an equivalent backlash to annul the backash in the compensating means and the potentiometer 21 is graded to ensure changes proportional to those in the compensating effect as in Specification 453,602. Resistances may be inserted between the resistance 23 and the grid P and condenser 22 respectively together with a condenser between the grid and cathode to add a component in accordance with the rate of change of compensation. Fig. 7 shows a relay arrangement in which two pentodes normally produce no current in opposed relay windings 35, 36, their grid circuits being reversely connected respectively across the conjugate points a, b of the bridge and suitably biassed. If the arrangements of Figs. 5 and 7 are combined a condenser 45 connected as shown will provide the rate of change factor. D.C. for the bridge may be obtained by winding 41 and rectifier 42. Specification 479,836 also is referred to.
    • 4. 发明专利
    • Improvements in and relating to automatic control of variable physical characteristics
    • GB453602A
    • 1936-09-14
    • GB469235
    • 1935-02-13
    • ALBERT CALLENDERALLAN BROWN STEVENSONICI LTD
    • G05B11/01
    • 453,602. Automatic control systems. CALLENDER, A., and STEVENSON, A. B., Winnington Hall, Northwich, Cheshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. Feb. 13, 1935, No. 4692. [Class 38 (iv)] Temperature &c.-A relay system operating a reversible motor to compensate changes in a variable physical characteristic is rendered operative when primary and secondary devices, responsive respectively to the changes in the characteristic and to changes in the compensating effect obtained from the compensating means, are not in correspondence. The secondary device, e.g. M2, Fig. 1 (Prov.), essentially comprises means 5 whereby an electrical potential proportional to the compensating effect is applied at a point X to an electrical system comprising a point P, to the potential of which the secondary device is responsive, which is connected on the one hand through a condenser 7 to the point X, and on the other hand through a resistance 9 to a point Q, the potential of which is determined by the desired value of the physical characteristic. The condenser 7 and the points P, Q, may each be connected by resistances 8, 12 to a common point, the point P being connected through a condenser 11 to a point Y maintained at constant, e.g. earth, potential. The system as a whole is adapted to provide a law of control expressed as -V = k1 ## dt + k2# + k3d#/dt, where V is a measure of the compensating effect, # a measure of the deviation of the characteristic and k1, k2, k3 are constants. Substantially the condenser 7, the resistance 12, and the condenser 11 provide the terms respectively proportional to #, ##dt and d#/dt, and the values of resistance and capacity determine the constants. The system may be modified to omit certain terms from this law of control. An exponential factor providing temporarily exaggerated compensation to deal with sudden changes in the characteristic may be introduced by adding a second electrical system, Fig. 3 (Prov.), comprising a point L, to the potential of which the primary device M1 is responsive, connected on the one hand through a resistance 84 and condenser 85 to a point of constant potential, and on the other hand through a second condenser 83 to a point 81 at which the potential changes in correspondence with changes in the characteristic. The characteristic may be controlled according to any desired behaviour thereof by varying the potential at the point Q in the first electrical system in the manner desired. The potential at the point X may be varied additionally according to changes in the magnitude of any further causal characteristic or characteristics, variations in which may be expected to lead to variations in the value of the main characteristic, e.g. steam pressure in a steam heating-system. Where large time lags are involved in the operation of a control system and large condensers would be required, these may be replaced by an electrochemical polarization cell, such as a Daniell's Cell, fed with a constant current in a direction and for a time according with the actuation of the compensating means. The invention is described as applied to the control of temperature, the compensating means being a valve through which heating medium is supplied. As shown in Fig. 2 (Prov.) the primary device M1 is responsive to amplified temperature variations the thermometer operating an arm 20 controlling a reversible electric motor 32 actuating follow-up contacts and gearing 37 giving the arm M1 a movement of say 60‹ for the permissible range of temperature. The secondary device is a milliammeter 43 actuated in accordance with the adjustments of the valve motor VM through the electrical system referred to, which is added a pentode thermionic valve 44 whereby the changes of potential at the point P are converted into a current actuating the needle M2. Contacts 38, 39 and 42 cooperate to control selectively thermionic valves 48, 51 with time delayed grid circuits and these actuate a reversing switch 50 for the motor VM. This motor drives also a potentiometer resistance 5 calibrated to accord with the variations in compensating effect produced by the valve and the steam potential of the point X is applied through condenser 7, and resistances 8 to the junction between resistances 9, 12 which is normally maintained at a potential determined by a point 9 on a potentiometer 13. The potential of this junction is applied through resistance 9 to the grid of the pentode between which and the cathode, which is maintained at a fixed potential, is connected the condenser 11. Resistances 59, 60 may be variable by causal characteristics. An adjustable resistance 47 is in parallel with the milliammeter 43 in the anode circuit of the pentode. The contact device actuated by the primary and secondary devices M1, M2, may be of the four-point mercury-surface type described in Specification 440,115. Fig. 1 (Comp.) shows a modification wherein the primary and secondary devices are thermionic valves 140, 130 the anode potentials of which normally balance a polarized relay 150 adapted selectively to control the valves 160, 170 through time-delayed grid circuits and so operate a reversing switch for the valve motor VM.. The connection between the valve and the potentiometer S mav include a lost-motion device 4 to compensate any back-lash in the valve operating mechanism. The potentiometer 122 adjusted in accordance with temperature changes by the arm 120 may be replaced by a liquid resistance 124 .. 126. In a modification a thermocouple is connected in the grid circuit of a pentode which forms the first stage in a three-stage resistance-condenser coupled amplifier replacing the valve 140. Fig. 3 (Comp.) shows a polarization cell 191 adapted to replace the condenser 7 and the resistance 12. Two electrodes 192, 193 lie in a cuprous salt solution about a porous diaphragm and are associated with a steep-slope pentode 190 whereby amplified potentials derived from the cell are applied to the valve 130. This arrangement is adapted for control systems having large time lags owing to the higher leakage resistance represented by the gridcathode resistance of the pentode but may be adapted to shorter time-lags by a resistance in parallel therewith.
    • 7. 发明专利
    • Improvements in or relating to the automatic control of variable physical quantities
    • GB488786A
    • 1938-07-11
    • GB3412936
    • 1936-12-11
    • ALBERT CALLENDERALLAN BROWN STEVENSONICI LTD
    • G05B11/01
    • 488,786. Fluid-pressure servomotorcontrol systems. CALLENDER, A., STEVENSON, A. B., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 11, 1936, No. 34129. [Class 135] [Also in Group XXXV] In systems for the automatic control of a variable quantity wherein a reversible electric or hydraulic servomotor operates correcting means, two relatively movable members control the motor, one being displaced according to changes in the quantity and the other in proportion to the correcting effect and being returned gradually to a predetermined position after any displacement by a spring or springs associated with a damping device. The " throttling zone " is thus eliminated. Fig. 1 shows temperature responsive bellows 19 operating contacts 16, 17 on a rod 18 which co-operate with a contact 15 to control a reversible motor 3 adjusting a valve 2 to correct any variation in temperature. A cam 4 causes rod 6 to move a lever 7 carrying the contact 15 a distance corresponding to the correction effect and springs 13, 14 subsequently return the contact to its original position at a rate determined by a dash-pot 10. The rod 6 may operate through a spring upon the upper end of the lever 7, which is restrained by a further dash-pot. Fig. 3 shows a modification in which the contact 15 is carried by a dash-pot 34 and the lever 7 operates on a point between springs 31, 32 secured to a fixed abutment and to the contact respectively. As shown in Fig. 6 the rod 6 carries an electromagnet 51 energized during the operation of the motor 3, thus moving an armature 53 carrying the contact 15 against the action of springs 13, 14. The return of this contact is damped by a fan 56 driven by a rack on the armature 53. The motion of the companion contacts 16, 17 may also be subject to control by springs and damping means. Thus the temperature sensitive element may operate upon an intermediate point in a lever, the ends of which are attached to springs and also, respectively, to a dash-pot and to the contacts 16, 17. Fig. 5 shows a modification of this wherein the lever 41 is controlled by a spring 50 at the end opposite to the contacts 16, 17 and the dash-pot 45 is connected to the lever between this spring and the temperature sensitive element 19. The contacts may be replaced by members operating upon a hydraulic servomotor. The apparatus may comprise means for varying the length of the rod 18 carrying the contacts 15, 16 or the position of the base of bellows 19 so as to cause the value of the variable to vary in accordance with a time schedule. Specifications 440,115 ; 453,602, and 458,176, [both in Group XXXV], are referred to.
    • 8. 发明专利
    • Improvements in or relating to the automatic control of variable physical characteristics
    • GB458176A
    • 1936-12-08
    • GB736935
    • 1935-03-08
    • ALBERT CALLENDERALLAN BROWN STEVENSONICI LTD
    • G05D16/18
    • 458,176. Automatic control systems. CALLENDER, A., and STEVENSON, A. B., Winnington Hall, Northwich, Cheshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. March 8, 1935, No. 7369. [Class 38 (iv)] Temperature, &c.-A system for the automatic control of a physical characteristic, wherein a reversible servomotor of any kind actuates correcting or compensating means as determined by a relay subject to the differential operation of means responsive to deviations of the characteristic from normal and means responsive to the action of the compensating means, is characterized by a coupling between the compensating means and the relay which comprises fluid within two or more containers and means displacing a wall of one of the containers in proportion to changes in the compensating effect, together with means tending gradually to restore the resulting pressure within another container to a standard value. The system is designed to produce a control law in which the compensating effect V is related to the deviation # according to the two equations k1, k2, k3, C, alpha and # being constants chosen according to the circumstances. It is however, adaptable to a simpler law in which #=Z or k3 = O. Fig. 1 shows such an arrangement. Tilting mercury switches in a relay 42 control a reversible electric motor operating a valve in a pipe supplying heating steam and are subject to the differential action of members 19 and 36 operated respectively in accordance with changes in the compensating effect, e.g. rate of steam flow, and in the controlled quantity, such as temperature. The coupling between the member 19 and the valve 2 comprises a cam T designed to produce displacements of a member R proportional to changes in the compensating effect. Fluid, such as oil, is enclosed in containers A, B and C. Container A has a movable wall constituted by the piston 4 actuated by the member R. It is connected directly to the container C, while container C is connected through a partly closed throttle valve 16 to a container B in which a standard pressure is maintained by a weighted piston 11. Throttle valves 17, 18 may be introduced between containers A and C for the purpose of introducing the third term in the equation defining the law of control. If the container A is not elastic (having a spring controlled wall 8) a compression tension spring is inserted in the couplings described. Back lash in the means actuating the steam valve is compensated by lost motion in the cam T with or without a friction device U. Changes in the controlled characteristic may be transmitted by fluid pressure proportional thereto to chamber 31 whereby a suitable pressure is applied to a piston in a container F which is directly connected to a container G. This is connected through a partly closed throttle valve to a container K having a spring-controlled wall 142. The members 19, 36 are respectively operated according to the pressures existing in containers C and G or these fluid pressures may themselves operate differentially upon a piston actuating the relay switches. The indicator of the controlled characteristic may directly operate upon the relay, either mechanically or by fluid pressure. The relay may be constituted according to Specification 440,115 or, as stated in the Provisional Specification, according to Specification 453,602. In order to anticipate changes which may occur in the controlled characteristic due to changes in a causal' quantity, such as steam pressure, a fluid pressure varying with the causal quantity may be applied to container A or a wall of this container is displaced in accordance with the magnitude of the causal property. The system of containers A, B, C may be double acting as shown in Fig. 4. Fig. 5 shows an arrangement in which two spring bellows AA, AB are secured centrally to a support and have their adjacent ends secured together ; their outer ends are jointly actuated by the member R. The containers AA, AB, are connected together through a throttle valve 161 and respectively to two further spring bellows CA, CB. Throttle valves 17A, 17B, 18A, 18B, are also arranged as shown. The movements of the common wall of containers CA, CB are communicated to the relay 42, which is coupled differentially to the member 361 of a system similar to that in Fig. 1, but also constructed of spring bellows. In a further modification, Fig. 6, the fluid pressure output from a double-acting system of containers is introduced through a throttle valve 88 to a spring bellows chamber 91 also subject to the fluid pressure output from a system of containers F, G, K; this spring bellows controls a four-point mercury contact system 92 according to Specification 440,115. The differential action of the members 19 and 36 or the differential fluid pressures may act upon a pilot valve system controlling a hydraulic servomotor. According to the Provisional Specification the compensating means may act upon the coupling by means of fluid pressure variations fed into the container A. A dash-pot was associated with the relay and the average size of each regulating step was adjustable. An arrangement was also suggested to obtain a law of control including the next derivative of the deviation #.
    • 10. 发明专利
    • Therapeutic compositions for injection
    • GB1016606A
    • 1966-01-12
    • GB3670062
    • 1962-09-27
    • ETHAN ALLAN BROWN
    • A61K9/00A61K9/51
    • Therapeutic compositions for injection comprise finely divided micro-particles of a metabolisable substance having an active drug adsorbed thereon, said micro-particles containing said drug being encapsulated in a metabolisable film-forming substance and said encapsulated micro-particles being suspended in a physiologically acceptable or non-toxic liquid carrier. The carrier may be an oil or saline solution, and when the former is used, the suspension may subsequently be emulsified in water; alternatively, the carrier may be a secondarily active substance, e.g. an anti-histaminic agent, or an anti-serium. The particles on which the drug is adsorbed are generally those of starch, but milled particles of dry amino acids or nucleic acids are also suitable. Suitable encapsulating agents include methyl, ethyl and hydroxyethyl celluloses, and low molecular weight polyethylene, polypropylene, polymethyl methacrylate, polyethyl methacrylate and polyethyl acrylate. The invention is particularly applicable for administering drugs which are normally likely to produce adverse side-effects; such drugs include antigens, anti-allergic agents, e.g. anti-histaminic agents, toxins and allergenic materials, and extracts of pollen.