A control system for controlling the ratio of hydrogen to carbon monoxide in the production of synthesis gas

A carbon monoxide and control system technology, applied in the direction of controlling the mixing ratio of fluids at different temperatures, gasification of granular/powdered fuels, etc., can solve problems such as prolonging the process flow, increasing process consumption, and excess hydrogen content

Active Publication Date: 2016-09-28
THE NORTHWEST RES INST OF CHEM IND
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  • Description
  • Claims
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Problems solved by technology

This means that for some chemical production processes, the hydrogen content in the synthesis gas is excessive, and subsequent hydrogen separation devices need to be added, resulting in prolongation of the process flow and increase in process consumption

Method used

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  • A control system for controlling the ratio of hydrogen to carbon monoxide in the production of synthesis gas

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Embodiment 1

[0090] Embodiment 1: Adopt control system of the present invention to control synthesis gas production process

[0091] Using the method described in CN100593509C, a certain coal in Henan is used as raw material to produce synthesis gas, and the production conditions are as follows: the volume concentration of oxygen is 99.6%, and the flow rate of oxygen input gasification reactor is 31340.00Nm 3 / h, the pressure and temperature of the oxygen input boundary area are 8.3MPa, 40°C; the volume concentration of natural gas is 96.30%, and the flow rate of the input gasification reactor is 22744.40Nm 3 / h, the pressure and temperature of natural gas are 8.1MPa, 30℃; the slurry concentration is 65% based on the total weight of dry coal, the flow rate of slurry input gasification reactor is 41849.60kg / h, the pressure and temperature are 7.8 MPa, 40°C; gasification reactor operating pressure 6.50MPa, operating temperature 1350°C. Attached figure 1 The control system shown controls th...

Embodiment 2

[0120] Embodiment 2: Adopt control system of the present invention to control synthesis gas production process

[0121] Using the method described in CN100593509C, a certain coal in Henan is used as a raw material to produce synthesis gas, and the production conditions are as follows: the volume concentration of oxygen is 99.5%, and the flow rate of oxygen input into the gasification reactor is 29928.11Nm 3 / h, temperature and pressure are 40.00°C, 8.30MPa; the volume concentration of natural gas is 96.30%, and the flow rate of the gasification reactor is 26305.10Nm 3 / h, the temperature and pressure are 30.00°C and 8.10MPa respectively; the slurry concentration is 65% based on the total weight of dry coal, the flow rate of the slurry into the gasification reactor is 32521.26kg / h, and the temperature and pressure are respectively 50.00°C, 7.80MPa; the operating pressure of the gasification reactor is 6.50MPa, and the operating temperature is 1350°C.

[0122] Attached figure ...

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Abstract

The invention relates to a control system for controlling the ratio of hydrogen and carbonic oxide in a synthesis gas control process. The control system is used for controlling the ratio of the hydrogen and the carbonic oxide in synthesis gas produced with slurry, natural gas and oxygen as raw materials. The system comprises a hydrogen and carbonic oxide ratio control subsystem, a first natural gas and oxygen flow ratio control subsystem, a slurry and oxygen flow ratio control subsystem and a second natural gas and oxygen flow ratio control subsystem. The system can control the mass ratio of the hydrogen and the carbonic oxide in the synthesis gas produced by reacting the slurry, the natural gas and the oxygen within the range needed by process conditions according to condition changes, and can achieve independent gasfication or common gasfication of the natural gas or the slurry. According to the system, through the mode of increasing fuel flow firstly and then increasing oxygen flow or reducing the oxygen flow firstly and then reducing the fuel flow, the oxygen cannot be excessive in the gasification process of the natural gas and the slurry, and guarantees are provided for producing the qualified synthesis gas.

Description

【Technical field】 [0001] The invention belongs to the technical field of hydrocarbon material gasification. More specifically, the present invention relates to a control system for controlling the ratio of hydrogen to carbon monoxide in the production of synthesis gas. 【Background technique】 [0002] The co-gasification technology of coal and natural gas is the technology of converting slurry made of coal and natural gas into clean syngas whose main components are hydrogen and carbon monoxide. Syngas can be used in the production of basic organic chemical products and fine chemicals, combined cycle power generation and coal-based polygeneration technology, and can also be used in the production of city gas and liquid fuel synthesis. Coal gasification technology is a technology to realize the clean utilization of coal, and the typical coal gasification technology is wet entrained gasification technology. The feature of wet entrained gasification technology is that the hydro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D11/16C10J3/48
Inventor 杨云龙徐红东崔意华刘军林益安韦孙昌徐宏伟贺根良门长贵
Owner THE NORTHWEST RES INST OF CHEM IND
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