Control system for coal gasification technical process of wet entrained flow bed

A control system and process technology, applied in the field of coal gasification, can solve the problems of insufficient control system, low gasification production risk, low production efficiency, and insufficient advanced control methods.

Active Publication Date: 2010-08-18
THE NORTHWEST RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the control systems of many gasification plants are either not comprehensive enough to fully control the main process of gasification production, or the control methods are not advanced enough, which increases the risk of gasification production and reduces production efficiency

Method used

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  • Control system for coal gasification technical process of wet entrained flow bed
  • Control system for coal gasification technical process of wet entrained flow bed
  • Control system for coal gasification technical process of wet entrained flow bed

Examples

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Comparison scheme
Effect test

Embodiment 1

[0196] A methanol plant with an annual output of 600,000 tons has a gasification pressure of 6.5MPa and a gasification temperature of 1360°C, using a certain coal as a raw material to implement the present invention. Effective gas CO+H from water washing tower 2 The content is 80.60%, the slurry concentration is 63.6%, and the operation cycle of the gasification device is more than 60 days.

[0197] Table 1 below shows the analysis results of the main coal quality data of a certain coal.

[0198] Table 1

[0199]

[0200] The coal gasification reaction utilizes the oxygen / slurry ratio provided in the present invention and the differential pressure transmitter produced by Shanghai Longruisi Electronic Technology Co., Ltd. provided by the feed control system to measure the oxygen flow rate to be 514m 3 / h, the oxygen flow after temperature and pressure compensation is 37721Nm 3 / h, the slurry flow measured by the electromagnetic flowmeter provided by Kaifeng Instrument Co....

Embodiment 2

[0225] A methanol plant with an annual output of 240,000 tons has a gasification pressure of 4.0 MPa and a gasification temperature of 1390°C, using a certain coal as a raw material to implement the present invention. Effective gas CO+H from water washing tower 2 The content is 79%, the slurry concentration is 58%, and the operation period of the gasification device is more than 60 days.

[0226] Table 2 below shows the analysis results of the main coal quality data of a certain coal.

[0227] Table 2

[0228]

[0229] The coal gasification reaction uses the oxygen / slurry ratio provided in the present invention and the differential pressure transmitter produced by Shanghai Longruisi Electronic Technology Co., Ltd. to provide the oxygen flow rate of 294m 3 / h, the oxygen flow after temperature and pressure compensation is 15954Nm 3 / h, the slurry flow measured by the electromagnetic flowmeter provided by Kaifeng Instrument Co., Ltd. is 33m 3 / h, after calculation, the ox...

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Abstract

The invention relates to a control system for the coal gasification technical process of a wet entrained flow bed. The control system comprises an oxygen/slurry ratio and feeding quantity control system, a gasification reactor temperature control system, a gasification reactor quenching chamber liquid level control system, a gasification reactor pressure control system, a mixing atomizer cooling protection system, a slag discharging control system, a water scrubber liquid level control system, a liquid level control system for an ash water treatment part, a pressure control system for the ash water treatment part and a safety protection system. The control system can carry out accurate measuring and effective control on the gasification reaction process. And the control system is also provided with the safety protection system, thus, once any one of the protected subsystems goes wrong and when the condition set by the safety protection system is fulfilled, the safety protection system is immediately started to trigger the gasification reactor to stop.

Description

【Technical field】 [0001] The present invention relates to the technical field of coal gasification, and more specifically, the present invention relates to a control system of wet entrained entrained bed coal gasification technology. 【Background technique】 [0002] Coal gasification technology is the basis for the clean utilization of coal in the future, and is considered to be the cleanest way of coal conversion and utilization. Among the various coal gasification methods, entrained bed gasification is the preferred technology for coal gasification projects because of its advanced technology, good gasification index, energy saving, high efficiency, and environmental friendliness. [0003] The entrained bed wet gasification technology is that oxygen and slurry enter the high temperature and high pressure gasification reactor for combustion at the same time. Features: ①High operating pressure. The pressurized gasification pressure of the slurry is generally about 0.1-20MPa(...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418C10J3/54
CPCY02P90/02
Inventor 门长贵贺根良李璞王锦杨云龙徐红东徐宏伟韦孙昌罗进成郑亚兰朱春鹏
Owner THE NORTHWEST RES INST OF CHEM IND
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