Start-stop control method and system for clean pulverized coal gasification apparatus to treat wastewater

A technology for wastewater treatment and control method, which is applied in the gasification of granular/powder fuel, the manufacture of combustible gas, and the petroleum industry. , cost saving and safety improvement

Active Publication Date: 2018-11-06
LUXI CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current conventional pulverized coal gasification device control methods and systems are too cumbersome, with complex sequence control logic, high investment costs, and long start-up time

Method used

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  • Start-stop control method and system for clean pulverized coal gasification apparatus to treat wastewater
  • Start-stop control method and system for clean pulverized coal gasification apparatus to treat wastewater
  • Start-stop control method and system for clean pulverized coal gasification apparatus to treat wastewater

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Embodiment Construction

[0071] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0072] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0073] The present invention relates to a system for on / off control of a clean pulverized coal gasification devi...

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Abstract

The invention provides a start-stop control method and system for a clean pulverized coal gasification apparatus to treat wastewater. The method comprises the steps of 1) performing airtight leak testing and exchanging, to be specific, performing pressurizing-depressurizing and exchanging three times on the clean pulverized coal gasification apparatus; 2) igniting, to be specific, controlling valves to introduce ignition air and ignition fuel gas for igniting; 3) pressurizing, to be specific, controlling valves to introduce pressurized oxygen and pressurized fuel gas; 4) charging coal, to be specific, controlling valves to charge oxygen and pulverized coal into a gasifier system for combusting; 5) charging wastewater, to be specific, controlling valves to charge the wastewater into a gasifier for combusting; 6) conducting gas, to be specific, controlling valves to supply gas into a rear system heat pipe; 7) stopping, to be specific, opening purging and exchanging valves to perform stopping, purging, exchanging and cooling for the system. Air is used herein to perform igniting; the operating control process has high safety coefficient; operating is simple and reliable; airtight testing and exchanging are carried out at the same time, the efficiency is high, and the cost is lower; a wastewater charging device is included in the system so that the system is good in safety and environmental friendliness and lower in cost.

Description

technical field [0001] The invention belongs to the technical field of pulverized coal gasification, and in particular relates to a start / stop control method and system of a clean pulverized coal gasification device for treating waste water. Background technique [0002] Pulverized coal gasification technology for waste water treatment is an advanced coal gasification technology, which is characterized in that the pulverized coal ground by the coal mill is transported to the gasification furnace under pressure, and gasifies with pure oxygen and waste water in the furnace to generate crude synthesis gas. The technology of blending and burning high-concentration organic wastewater in a composite gasification device can completely solve the problem of difficult treatment of high-concentration organic wastewater on the one hand, and realize the recycling and utilization of high-concentration organic wastewater in coal chemical enterprises on the other hand. [0003] The start-u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/46C10J3/72
CPCC10J3/46C10J3/72
Inventor 杨延伟周广兵庞书阳朱士宁
Owner LUXI CHEM GRP
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