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Starting/stopping control method and system for powdered coal pressure gasification device

A technology for pressurized gasification and control method of pulverized coal is applied in the field of coal chemical industry, which can solve the problems of complex control, unsatisfactory overall operation and high investment cost, and achieve the effects of high degree of automation, short start-up time and reduced start-up cost.

Active Publication Date: 2014-02-26
CHANGZHENG ENG
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Problems solved by technology

The current pulverized coal pressurized gasification technology mainly has the following shortcomings: the control is too complicated, the overall operation is not ideal, and the investment cost is high

Method used

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  • Starting/stopping control method and system for powdered coal pressure gasification device
  • Starting/stopping control method and system for powdered coal pressure gasification device

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] figure 1 and figure 2 An exemplary flow chart and a process flow chart of the on / off control method of the present invention are respectively shown.

[0023] Such as figure 1 and figure 2 As shown, according to this embodiment, the present invention provides an on / off control method for a pulverized coal pressurized gasification device, the method comprising:

[0024] S1. Shutdown nitrogen purge operation of the pulverized coal pressurized gasification device: purge the pulverized coal pressurized gasification device for a short time before raising / lowering the pressure, and then perform multiple times on the pulverized coal pressurized gasification device Ra...

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Abstract

The invention provides a starting / stopping control method and system for a powdered coal pressure gasification device. The method and system control purging stop, oxygen system starting, ignition burner starting, startup burner starting as well as coal burner starting of the powdered coal pressure gasification device. The starting / stopping control method and system have the advantages of high automation degree, concise starting / stopping control, safety and reliability, short starting time, and greatly reduced starting expense.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to an on / off control method and system for a pulverized coal pressurized gasification device. Background technique [0002] Pulverized coal pressurized gasification technology is an advanced coal gasification technology at present. It is characterized in that the crushed coal from the raw coal storage bin is added to the coal mill to be ground into powder, dried by high-temperature inert airflow, and then pressurized. It is transported to the gasifier, and undergoes a high-temperature combustion reaction with pure oxygen from air separation in the furnace to generate crude synthesis gas, which can be used as raw material gas for subsequent stages, and can be widely used in coal-based methanol, coal-based synthetic ammonia, coal-based natural gas, coal Synthetic oil, coal to olefins, coal to hydrogen, IGCC power generation and other fields. The current pulverized coal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/46C10J3/48G05B19/418
CPCY02E20/18Y02P90/02
Inventor 石剑马琳丁兴强丁建平彭书朱玉营吴海峰杨立峰姜从斌
Owner CHANGZHENG ENG
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