Carbon monoxide conversion process

A carbon monoxide, process technology, applied in the field of carbon monoxide conversion process, to achieve the effect of broadening the use conditions and broadening the source range

Active Publication Date: 2020-12-29
SINOPEC NANJING RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] At present, there is no carbon monoxide shift reaction process applicable to a variety of feedstock gases (such as synthesis gas, coke oven gas, blast furnace gas, self-combined gas and laboratory coal gasification product gas as feedstock gas) and various conditions

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  • Carbon monoxide conversion process

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Experimental program
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Effect test

Embodiment 1

[0038] The raw material gas is a self-combined gas, in which the volume fraction of hydrogen is 64%, the volume fraction of carbon monoxide is 20%, the volume fraction of carbon dioxide is 10%, and the volume fraction of methane is 12%.

[0039] A schematic diagram of the carbon monoxide shift process is shown in figure 1 , the carbon monoxide shift process comprises the following steps:

[0040] (1) Raw material gas purification: The raw material gas passes through the desulfurization and dechlorination reactors controlled at a pressure of 3.0Mpa and a temperature of 240°C in sequence. The crude desulfurization catalyst A is zinc oxide, and the fine desulfurization catalyst B is a mixture of cobalt-molybdenum catalyst and iron oxide , the volume ratio of A:B is 1.5:1, and after cooling by the water cooling system and gas-liquid separation, the purified feed gas with a sulfide concentration of 0.08ppm and a chloride concentration of 0.04ppm is obtained;

[0041] (2) Water vap...

Embodiment 2

[0047] The raw material gas is coke oven gas, in which the volume fraction of hydrogen is 60%, the volume fraction of carbon monoxide is 10%, the volume fraction of carbon dioxide is 3%, the volume fraction of methane is 18%, and the hydrocarbon is 3%.

[0048] The carbon monoxide shift process includes the following steps:

[0049] 1) Purification of raw material gas: The raw material gas passes through the desulfurization and dechlorination reactors with a pressure of 2.5Mpa and a temperature of 200°C. The crude desulfurization catalyst A is a mixture of zinc oxide and activated carbon, and the fine desulfurization catalyst B is a cobalt-molybdenum catalyst. : B volume ratio is 2.0:1, and then after cooling by water cooling system and gas-liquid separation, the purified raw material gas with sulfide concentration of 0.05ppm and chloride concentration of 0.01ppm is obtained;

[0050] (2) Water vaporization: deionized water is pumped into the vaporizer with a temperature contr...

Embodiment 3

[0056] The raw material gas is the product gas of Inner Mongolia lignite gasification in the laboratory, which contains hydrogen volume fraction of 56%, carbon monoxide volume fraction of 15%, carbon dioxide volume fraction of 14%, methane volume fraction of 5%, and hydrocarbons of 6%.

[0057] The carbon monoxide shift process includes the following steps:

[0058] 1) Purification of raw material gas: The raw material gas passes through the desulfurization and dechlorination reactors with the pressure controlled at 3.0Mpa and the temperature controlled at 240°C. The crude desulfurization catalyst A is a mixture of zinc oxide and activated carbon, and the fine desulfurization catalyst B is a cobalt-molybdenum catalyst and oxidation Iron mixture, the volume ratio of A:B is 1.8:1, after cooling by water cooling system and gas-liquid separation, the purified raw material gas with sulfide concentration of 0.02ppm and chloride concentration of 0.01ppm is obtained;

[0059] (2) Wate...

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Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to a carbon monoxide conversion process. The process comprises the steps: (1) purification of feed gas; (2) water vaporization; (3) gas-steam mixing; (4) shift reaction; and (5) gas-liquid separation. According to the carbon monoxide conversion process disclosed by the invention, a desulfurization, dechlorination and purification process matched with the conversion process is adopted, so that the source range of feed gas is widened; an isothermal shift reaction furnace can rapidly and effectively remove reaction heat, and compared with a traditional reaction furnace, the isothermal shift reaction furnace has a good protection effect on a copper-based shift catalyst used in the furnace, widens theuse conditions of the catalyst, and has the inlet temperature of 180-280 DEG C, is suitable for synthesis gas, coke-oven gas, blast furnace gas, self-matched gas and laboratory coal gasification product gas with the CO volume content of 1%-30%, and has the carbon monoxide conversion rate reaching 90% or above.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a carbon monoxide conversion process. Background technique [0002] Carbon monoxide shift reaction refers to the reaction of carbon monoxide and water vapor to generate carbon dioxide and hydrogen under certain conditions. [0003] CO+H 2 O→CO 2 +H 2 [0004] The shift reaction is an exothermic reaction, and low temperature is conducive to the positive reaction, so the lower the temperature, the more favorable the reaction. Shift reactions are generally divided into low-temperature (usually 200-300°C) shift reactions and high-temperature (usually 300-500°C) shift reactions according to temperature. At present, many factories producing hydrogen generally adopt the process of high-temperature transformation and low-temperature transformation in series to ensure a more complete transformation of CO. [0005] The temperature of the gas after the high-tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/16
CPCC01B3/16C01B2203/0283C01B2203/04C01B2203/1076C01B2203/1211C01B2203/1258C01B2203/127C01B2203/1288Y02P20/52
Inventor 王金利蔡进张杰吴学其朱艳芳黄先亮徐本刚吴琳
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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