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    • 94. 发明专利
    • CATALYST FOR LIQUEFYING COAL
    • JPS62152541A
    • 1987-07-07
    • JP29761685
    • 1985-12-26
    • SUMITOMO METAL IND
    • SUHARA YASUHIROKANO TAKUOHAYASHI TAKASHI
    • B01J27/02C10G1/06
    • PURPOSE:To enhance the yield of liquefied oil and to reduce cost, by forming a coal liquefying catalyst of a particulate material with a particle size of 350 mesh or less and moisture of 0.5% or less obtained by drying and grinding dust generated from an iron bath coal gasifying furnace. CONSTITUTION:Dust generated from an iron bath coal gasifying furnace is recovered along with water in a slurry state by a thickener and this recovered slurry is dehydrated, dried and ground to obtain a particulate material with a particle size of 350 mesh or less and moisture of 0.5% or less used as a coal liquefying catalyst. Drying after the aforementioned dehydration is performed using hot air of about 200 deg.C but, if necessary, N2-drying under atmospheric pressure is further employed. The fine grinding of dust is performed using a general ball mill and the adjustment of a particle size to a predetermined one is performed by a vibration screen. This catalyst can more enhance the yield of liquefied oil and reduces the cost of a liquefied oil product.
    • 96. 发明专利
    • METHOD OF LIQUEFYING COAL THROUGH CATALYTIC HYDROGENATION
    • JPS62131092A
    • 1987-06-13
    • JP27060085
    • 1985-12-03
    • MITSUI SHIPBUILDING ENG
    • MURATA KATSUHIDEITO HIDENOBU
    • C10G1/06
    • PURPOSE:To obtain a hydroliquefied gas in a simple process in a high yield and at a low cost, by preheating and reacting a particular raw coal slurry in the presence of hydrogen and further preheating and hydroliquefying the coal slurry using a recovered heavy distillate liquefied oil as a medium oil. CONSTITUTION:A raw coal slurry 4 was prepared from 1kg (on the dry basis) of raw coal powder 1, 10-70g of a binary mixed hydrogenation catalyst 2 comprised of 1pt.wt. low-temp. active catalyst (e.g., nickel-based catalyst) and 1-10pts.wt. high- temp. active catalyst (e.g., Fe-based catalyst) and 1.1-5kg of a medium oil 3 comprised of a heavy distillate liquefied oil 16 having a b.p. of 300-538 deg.C which has been obtd. by distilling the hydroliquefied oil in vacuo is preheated in a first preheater to 250-450 deg.C together with a hydrogen gas 5 such as a hydrogen-rich gas obtd. by gas-liq. separation of the hydroliquefied product. The slurry is led to a preheated reactor 7 to cause a hydrogenation reaction, while the raw coal powder 1 is dissolved in the medium oil 3. It is preheated in a second preheater 8, hydroliquefied in a water stream liquefaction reactor 9. The reaction mixture is led to a gas-liq. separator 10, where it is separated into a hydrogen-rich gas 11 and an oil component 12. After removal of solid matter with a solid-liq. separator 13, the oil component 12 is separated into a light oil 15 and heavy distillate liquefied oil 16.
    • 97. 发明专利
    • PRODUCTION OF TAR OILS
    • JPS62131091A
    • 1987-06-13
    • JP27209485
    • 1985-12-03
    • MITSUBISHI CHEM IND
    • YOSHINO YOSHIODOBASHI KOJITORIMARU HIROYUKITANIOKA SEIICHI
    • C10B27/00C10G1/02C10G1/06
    • PURPOSE:To efficiently recover and collect tar oils, by recovering tar oils from a gas which has been produced in the first half period of carbonization from a coke oven gas, recovering a gas which has been produced in the second half period of carbonization through a switching operation and contacting them with coal having a low degree of coalification, thereby causing hydropyrolysis. CONSTITUTION:Coal is carbonized in a carbonization chamber of a chamber type coke oven 1. A tar-contg. gas, as shown in section I, produced in the first half period of the carbonization having a calorific value of 5,000kcal/Nm or more and a hydrogen concn. of 50-55vol% and a methane concn. of 30-35vol% is led to, e.g., a bent portion of a riser where aq. ammonia is sprayed to the gas to recover the gas and tar oils. A gas, as shown in section II, produced in the second half period of carbonization having a hydrogen concn. of 55-90vol%, a methane concn. of 30-0vol% and substantially free from tar is taken out of the coke oven 1 through a switching operation at an appropriate time. The gas thus obtd. is pressurized with a compressor 2 and, if necessary, preheated with a preheater 3. The gas is then led to a reactor 4. Powdery coal having a low degree of carbonization is supplied into the reactor via a feeder 5. In the reactor, the coal is contacted with the gas at 600-1,000 deg.C to cause hydropyrolysis. Char or the like is separated with a char separator 6. Liquid components contg. tar oils, etc., are separated and recovered with a liq. product separator 8 via a cooler 7.
    • 99. 发明专利
    • METHOD OF CONTROLLING COAL LIQUEFYING REACTION
    • JPS6236490A
    • 1987-02-17
    • JP17573885
    • 1985-08-12
    • SUMITOMO METAL IND
    • CHIKADA TSUKASAHAYAKAWA KEIICHI
    • C10G1/06
    • PURPOSE:To continuously liquefy coal in a high oil yield without occurrence of device troubles, by liquefying coal while controlling each operating factor so as to give a constant C of the given equation in a particular range. CONSTITUTION:1pt.wt. coal and 0.1pt.wt. or less catalyst such as iron powder are added to 1-2pts.wt. hydrogenated circulating solvent comprising a coal liquefied oil to prepare a slurry. The slurry is pressure fed together with hydrogen into a high temp. and high-pressure liquefying reactor. A liquefying reaction is conducted by concurrently ascending the slurry and gas, while the feed, G, of the hydrogen contg. gas is controlled so that the constant C in the equation [wherein G is the feed of the hydrogen contg. gas (Nl/hr); S is the feed of the slurry (l/hr); C is a constant; Po is the operating pressure (atm); Tb is the operating temp. (K); BP is the boiling point of the slurried solvent; alpha is the fraction of the weight of the solvent in the slurry] is in the range of 0.5-1.0. After completion of the reaction, the slurry is distilled to separate it into a light product oil, a circulating oil and a residue. The circulating oil is hydrogenated and the product is used as the hydrogenated circulating solvent for slurry.