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Coal gas overpressure safety release system

A safe release and coal-to-gas technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems that are prone to explosion accidents, it is difficult for operators to make correct emergency operations in time, and the gas heat utilization system There are safety hazards and other problems, to achieve the effect of preventing explosion accidents

Active Publication Date: 2020-09-04
XUANCHENG YABANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that there are potential safety hazards in this gas heat utilization system. When the emergency cut-off valve of the main gas supply valve of the burner is closed, the system loses power, or other faults or operating errors, it is difficult for the operator to do it in time within a few seconds of reaction time. The corresponding correct emergency operation, prone to explosion accidents

Method used

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  • Coal gas overpressure safety release system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Reference figure 1 , Coal gas overpressure safety release system, in accordance with the normal gas flow sequence includes intercooler 4, electric tar catcher, low pressure gas circuit 5, gas pressurizer 2, high pressure gas circuit 6 and heat transfer oil furnace 1.

[0040] Wherein, a filter is also arranged on the high-pressure gas path 6 .

[0041] The high-pressure gas circuit 6 is provided with a pressure release main valve 7, and the pressure release main valve 7 adopts a DN200 pneumatic ball valve. The controller is a single-chip microcomputer, one control end of which is connected with the burner, and the other control end is connected with the pressure release main valve, when the burner stops working, the pressure release main valve is opened, and when the When the burner starts to work, the pressure relief main valve is closed.

[0042]When there is a power failure or the burner stops working due to the problem of heating rate, the pressure rele...

Embodiment 2

[0043] Example 2: Reference figure 1 , the coal-gas overpressure safety release system differs from Embodiment 1 in that it also includes a pressure release auxiliary valve 8, which adopts a DN100 pneumatic ball valve, and the exhaust pipeline where the pressure release auxiliary valve 8 is located is connected to the The exhaust pipeline where the pressure relief main valve 7 is located is set in parallel on the high-pressure gas path 6, and the release of the pressure relief secondary valve 8 is interlocked with the pressure signal of the high-pressure gas path 6 through the controller , the controller is a single-chip microcomputer, one control end of which is connected to the pressure sensor, and the other control end is connected to the pressure release auxiliary valve 8. When the pressure signal of the high-pressure gas circuit is higher than 12kPa, the pressure release auxiliary valve 8 Open, when the pressure signal of the high-pressure gas circuit is lower than 6kPa, ...

Embodiment 3

[0045] Example 3: Reference figure 1 , the coal-gas overpressure safety release system differs from Embodiment 1 in that it also includes an anti-backflow valve 9, which is arranged on the emptying pipeline of the intercooler 4, and the release of the anti-backflow valve 9 It is interlocked with the pressure signal of the low-pressure air circuit 5 through a controller, the controller is a single-chip microcomputer, one control end of which is connected to the pressure sensor, and the other control end is connected to the anti-backflow valve 9, when the low-pressure air circuit When the pressure signal of the low-pressure gas circuit is higher than 2kPa, the anti-backflow valve 9 is opened, and when the pressure signal of the low-pressure gas circuit is lower than 1kPa, the anti-backflow valve 9 is closed.

[0046] The pressure sensor on the low-pressure gas circuit 5 monitors the pressure. When the pressure of the low-pressure gas circuit 5 increases, it means that the gas te...

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Abstract

The invention discloses an overpressure safe coal gas releasing system, and belongs to the technical field of utilization of coal heat. The system comprises a heat transferring oil furnace, a coal gaspressurizing machine, a coal gas dust remover, an intercooler, a low-pressure gas channel, a high-pressure gas channel and a main pressure releasing valve, wherein the main pressure releasing valve is arranged on an emptying pipeline of the high-pressure gas channel; and a releasing signal of the main pressure releasing valve and a combustor on-off signal of the heat transferring oil furnace areinterlocked. The system is applicable to a gas channel through which the coal gas is charged into the heat transferring oil furnace and is capable of effectively releasing backwards-filled high-pressure gas, so that the explosion accident can be prevented; and the safety production is ensured.

Description

technical field [0001] The invention relates to the technical field of coal gas heat utilization, in particular to a coal-gas overpressure safety release system. Background technique [0002] The gas furnace is used to burn coal to produce gas. The gas is cooled, purified and pressurized to be used as fuel for the heat transfer oil furnace, and the heat transfer oil is heated for better use of its heat energy. For example, the Chinese invention with application number 201710907196.6 The patent discloses a production system using heat transfer oil as a heat source, which uses gas heating instead of steam heating, which can effectively reduce energy costs, uses heat transfer oil instead of steam for heating, avoids more waste water, has low treatment costs, and is more environmentally friendly. [0003] The temperature rise rate of the heat transfer oil in the heat transfer oil furnace should not be too fast. When the burner of the heat transfer oil furnace burns gas so that t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/00
CPCF17D5/00
Inventor 吴红旗刘武
Owner XUANCHENG YABANG CHEM