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    • 5. 发明授权
    • Process for working up municipal plastic waste materials by gasification
    • 通过气化处理市政塑料废料的工艺
    • US5470361A
    • 1995-11-28
    • US331364
    • 1994-10-27
    • Adolf LinkeWerner PohlKarl SchmidRolf Wetzel
    • Adolf LinkeWerner PohlKarl SchmidRolf Wetzel
    • C10J3/46C10J3/66C10J3/06C10K1/02C10K1/06
    • C10J3/00C10J3/66C10J3/721C10K1/003C10K1/004C10K1/02C10K1/101C10K1/143C10J2300/0906C10J2300/0946C10J2300/0959C10J2300/169C10J2300/1884Y02E50/32
    • In the process for gasification of municipal waste plastic waste material pieces of about a 20 mm piece size are compressed and heated at a pressure of from 40 to 80 bar until at a temperature of from 230.degree. to 300.degree. C. to produce an HCl-containing gas and a plastic waste material containing less than 3000 mg of HCl per kg and the HCl-containing gas produced is washed with water to produce a hydrochloric acid solution. The plastic waste material is then heated further until at a temperature of from 400.degree. to 500.degree. C. to form a plastic melt having a viscosity of less than 300 cSt, advantageously less than 50 cSt. This plastic melt is gasified at a pressure of 4 bar with oxygen in a flame reaction to form a crude gas containing a preponderant proportion of CO in relation to CO.sub.2 in a gasification chamber having a central temperature of about 1600.degree. C. The crude gas is withdrawn from the gasification reactor at a temperature of 1300.degree. to 1600.degree. C., quenched with a water spray to cool it until at a temperature of 700.degree. to 900.degree. C. and then further cooled by indirect heat transfer in a heat exchanger producing steam until at a temperature of from 220.degree. to 300.degree. C. The cooled crude gas is dedusted until a dust content of less than 20 mg/Nm.sup.3 of crude gas is reached and the dedusted gas is washed and desulfurized to form the product gas.
    • 在城市废塑料废气的气化过程中,将大约20毫米片尺寸的废料在40至80巴的压力下压缩和加热至230℃至300℃的温度,以产生HCl- 含有气体和每千克含有少于3000毫克HCl的塑料废料,所生成的含HCl气体用水洗涤以产生盐酸溶液。 然后将塑料废料进一步加热至400℃至500℃的温度,以形成粘度小于300cSt,有利地小于50cSt的塑料熔体。 该塑料熔体在4巴的压力下与氧气在火焰反应中气化,形成一种粗气体,其在中心温度为约1600℃的气化室中含有相对于CO 2的CO优选比例。粗气体为 在1300℃至1600℃的温度下从气化反应器中取出,用水喷雾骤冷至700℃至900℃的温度,然后通过间接传热在热交换器中进一步冷却,产生 蒸汽直至温度为220〜300℃。将冷却的粗气除尘至达到小于20mg / Nm3的原油的粉尘含量,并将除尘气体洗涤并脱硫形成产物气体。
    • 7. 发明授权
    • Method of cooling partial oxidation gas
    • 冷却部分氧化气体的方法
    • US4936871A
    • 1990-06-26
    • US322073
    • 1989-03-10
    • Gerhard WilmerRolf Wetzel
    • Gerhard WilmerRolf Wetzel
    • C10J3/84C10K1/04
    • C10K1/04C10J3/84C10K1/08C10J2300/1603
    • Decribed is a method of cooling partial oxidation gas exiting at a temperature between 1,000.degree. and 1,700.degree. C. from a conically converging outlet portion of a reactor vessel into a subsequent tubular cooling zone. To prevent deposition of sticky molten impurities entrained in the gas stream on the walls in the transition region between the reactor vessel and the cooling zone, the outlet portion of the reactor vessel is provided with a ring-shaped slot for injecting at an angle between 0.degree. to 90.degree. a frustoconical stream of cooling fluid. Another ring-shaped slot is provided in the cooling zone to inject at an angle between 70.degree. to 90.degree. another frustoconical stream of cooling fluid into the cooling zone.
    • 说明的是将部分氧化气体在1000℃至1700℃的温度下从反应器容器的锥形出口部分冷却到随后的管状冷却区域中的方法。 为了防止夹带在气流中的粘性熔融杂质沉积在反应器容器和冷却区之间的过渡区域中的壁上,反应器容器的出口部分设置有环形槽,用于以0° DEG至90°的截头圆锥形冷却液流。 在冷却区中设置另一个环形槽,以70度至90度之间的角度将另一个截头圆锥形的冷却流体流注入冷却区。
    • 9. 发明授权
    • Method for producing steel
    • 生产钢的方法
    • US4045214A
    • 1977-08-30
    • US540957
    • 1975-01-14
    • Rolf WetzelDietrich Radke
    • Rolf WetzelDietrich Radke
    • C21B13/14C21C1/08
    • C21B13/143Y02P10/136Y02P10/265Y02P10/283
    • A method for producing steel from fine-grained iron ores includes the step of preheating and partially reducing the fine-grained iron ores in a countercurrent heat exchanger. The preheated and partially reduced fine-grained iron ores are then reduced in a fluidized bed reactor to form sponge iron. The reduction in the fluidized bed reactor is effected with exhaust gases which consist substantially of carbon monoxide and which emanate from a melting vessel in which sponge iron is melted. The fine-grained sponge iron produced in the fluidized bed reactor is separated from the reduction gases which form during the reduction in the fluidized bed reactor. The separated fine-grained sponge iron is pneumatically transported into a carbon containing melt in the melting vessel. The transported sponge iron is melted and subjected to a final reduction in the metal melt with the carbon in the metal melt and with further carbonaceous material which is pneumatically introduced into the metal melt. The melt is refined with pure oxygen. The oxygen, carbonaceous material and sponge iron are introduced into the metal melt through at least one nozzle which is disposed below the level of the metal melt surface.
    • 从细粒铁矿石生产钢的方法包括在逆流热交换器中预热和部分还原细粒铁矿石的步骤。 然后将预热和部分还原的细粒铁矿石在流化床反应器中还原以形成海绵铁。 流化床反应器的还原是由主要由一氧化碳组成并从海绵铁熔化的熔化容器中排出的废气来实现的。 在流化床反应器中生产的细粒海绵铁与在流化床反应器还原期间形成的还原气体分离。 分离的细粒海绵铁在熔融容器中气动输送到含碳的熔体中。 将输送的海绵铁熔化,并使金属熔体与金属熔体中的碳和进一步的气态导入金属熔体中的碳质材料最终还原。 熔体用纯氧精炼。 氧气,含碳材料和海绵铁通过设置在金属熔体表面的下方的至少一个喷嘴引入到金属熔体中。