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Secondary transformation technological method of high concentration carbon monooxide

A technology of carbon monoxide and process methods, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., to achieve the effects of not being overheated, simple in construction, and easy in process equipment

Active Publication Date: 2006-09-13
WUHUAN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no high-concentration carbon monoxide shift process in production and operation in China or even in the world

Method used

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  • Secondary transformation technological method of high concentration carbon monooxide
  • Secondary transformation technological method of high concentration carbon monooxide
  • Secondary transformation technological method of high concentration carbon monooxide

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The 180,000-ton synthetic ammonia high-concentration CO secondary conversion process device designed by the present invention is used in a Shell coal gasification project with a coal input of 1,000 tons / day.

[0036] Process such as figure 1 As shown, the raw material gas from dry pulverized coal gasification is heated by the gas preheater 4 and the gas heat exchanger 5, and then supplemented with steam in the steam mixer 6, then enters the primary shift furnace 1 for shift reaction, and exits the primary shift furnace After the shift gas is quenched and cooled with chilled water in the 1# quenching filter 7, it enters the second-stage first-stage shift furnace 2 for shift reaction, and the shift gas exiting the second-stage first-stage shift furnace 2 passes through the methanation heater 8 to recover heat. The gas entering the primary converter 1 is heated in the gas heat exchanger 5, and after being quenched and cooled by quenching water in the 2# quenching filter 9,...

Embodiment 2

[0045] The 500,000-ton synthetic ammonia high-concentration CO secondary conversion process device designed by the invention is used in the Shell coal gasification project with a coal input of 2,400 tons / day.

[0046] Process such as figure 2 Shown: The feed gas from dry pulverized coal gasification is divided into two streams, one of which is preheated by the coal gas preheater 4, mixed with supplementary steam in the steam mixer 6, and then heat exchanged by the coal gas heat exchanger 5, and then further The first-stage shift furnace 1, the shift gas leaving the first-stage shift furnace 1 passes through the steam superheater 19 to recover heat, and after exchanging heat with the gas entering the first-stage shift furnace (first shift furnace) 1 in the gas heat exchanger 5, it is exchanged with the gas from the first stage shift furnace. The second raw material gas of dry pulverized coal gasification is mixed, and after being cooled by quenching water in 1# quenching filte...

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Abstract

A two-stage conversion process for high-concentration CO whose volume concentration is greater than 50% includes such steps as pre-heating to 240+ / -20 deg.C, steam saturating, stage-one sulfur-resistant wide-temp conversion by one or two segments for 1-2 s while recovering afterheat to decrease its volume concentration to 46.1% or less, and stage-two sulfur-resistant wide-temp conversion at 180-260 deg.C for 2-2.5 S while recovering residual heat to decrease its volume concentration to 0.3-3%.

Description

technical field [0001] The invention relates to a two-stage shift production process method and equipment for producing hydrogen and carbon dioxide through transformation reaction of carbon monoxide concentration ≥ 50% in raw material gas produced by coal gasification and gas production with water vapor under the action of a catalyst. Background technique [0002] The carbon monoxide shift production process is an important purification process in the production process of ammonia synthesis and hydrogen production. In the carbon monoxide conversion process, most of the carbon monoxide is removed, and at the same time, the carbon monoxide is converted into the required effective gas component hydrogen, and then chemical products such as synthetic ammonia, methanol, and hydrogen are produced through different types of reaction processes. [0003] The main process principle of carbon monoxide conversion is: carbon monoxide and water vapor undergo carbon monoxide conversion reac...

Claims

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Application Information

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IPC IPC(8): C01B3/16
Inventor 汪寿建宫径德胡四斌徐才福
Owner WUHUAN ENG
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