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A dust filtering system and method for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances

A dust filtration and water vapor technology, applied in chemical instruments and methods, membrane filters, separation methods, etc., can solve the problems of inaccurate temperature control of regeneration gas, insufficient contact of filter mechanism, incomplete reaction of regeneration gas, etc. Low cost, fast regeneration rate, and the effect of reducing heat loss

Active Publication Date: 2017-12-08
HENAN DRAGON INTO COAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these patents do not fully utilize heat, wasting a lot of waste heat, and the temperature control of the regeneration gas is not accurate enough, and the contact with the filter mechanism is not sufficient, so that the carbon-containing easy precipitates do not react completely with the regeneration gas.

Method used

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  • A dust filtering system and method for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances
  • A dust filtering system and method for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances
  • A dust filtering system and method for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances

Examples

Experimental program
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Effect test

Embodiment 1

[0033] see figure 1 and figure 2, a dust filtration system for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances, including two parallel airtight separation chambers 1, and the airtight separation chambers 1 are connected to an air intake main pipe 3 through an air intake branch pipe 2, The exhaust main pipe 5 is connected through the exhaust branch pipe 4, and the valve 6 is respectively arranged in the air intake branch pipe 2 and the exhaust branch pipe 4, and a filter mechanism 7 and a filter body regeneration mechanism 8 are arranged in the sealed separation chamber 1, and the filter The body regeneration mechanism 8 is a heat exchange tube 9 arranged around the inner wall of the airtight separation chamber 1, and the heat exchange tube 9 is provided with a regeneration gas inlet 10 and a plurality of regeneration gas outlets 11, and the regeneration gas outlet 11 includes the regeneration gas outlet on the upper pa...

Embodiment 2

[0041] see image 3 and figure 2 , the filter system of this embodiment is similar in structure to the filter system of Embodiment 1, the same parts will not be repeated, and some differences are: the filter mechanism 7 is a plurality of concave arc-shaped filter screens arranged side by side, towards the filter system air intake main pipe 3 direction sunken.

[0042] The filtration method in this implementation is basically the same as in Example 1, and the same parts will not be repeated. Some differences are: the regeneration gas is heat-exchanged to 400°C, the volume content of the oxygen-containing gas is 5%, and the aeration time is 12 hours.

[0043] see image 3

[0044] see Figure 4 and figure 2 , a dust filtration system for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances, including three parallel airtight separation chambers 1, and the airtight separation chambers 1 are connected to an air intake main ...

Embodiment 5

[0054] The filtration system of this embodiment is similar in structure to the filtration system of Embodiment 3, and the same parts will not be repeated. Some differences are: the regeneration gas is heat-exchanged to 420°C, and the ventilation time is 5 hours. The regeneration gas is an oxygen-containing gas. Oxygen-containing gas is formed by diluting air with nitrogen, and the oxygen volume content is 4%.

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Abstract

The invention discloses a dust filtering system and method for a mixture of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances. The system includes a plurality of parallel airtight separation chambers, and the airtight separation chambers are connected to the air intake through an air intake branch pipe. The main pipe is connected to the exhaust main pipe through the exhaust branch pipe. The intake branch pipe and the exhaust branch pipe are respectively equipped with valves. The filter mechanism and the filter regeneration mechanism are arranged in the closed separation chamber. The filter regeneration mechanism is set around the inner wall of the closed separation chamber. Heat exchange tube, the heat exchange tube is provided with a regeneration gas inlet and multiple regeneration gas outlets, and a plurality of series-connected heat exchangers are arranged outside the airtight separation chamber, and the regeneration gas after heat exchange is passed into the heat exchange tube . The filtering system of the invention fully utilizes the heat, reduces the waste of heat, and the carbon-containing easy precipitates react thoroughly with the regeneration gas, and the filtration efficiency and the regeneration efficiency are high.

Description

technical field [0001] The invention belongs to the technical field of gas dust removal, in particular to a dust filtering system and method for a mixed gas of high-temperature oil gas, water vapor, and carbon-containing easily precipitated substances. Background technique [0002] In the chemical, petroleum, metallurgical and other industries, high-temperature dust-containing gases are often produced, especially in the process of pyrolyzing low-rank coal to generate coal tar gas and decomposing gas to improve coal quality. The content of pulverized coal is very high, and the carbon-containing substances in the mixed gas, such as tar coke, asphalt-like substances, and coal ash attachments, can only exist in a gaseous state in a high-temperature environment. Once the temperature is too low or the environment changes, It is easy to slowly precipitate out of the mixed gas. Carbon-containing substances that are easy to precipitate, such as tar coke, asphalt-like substances, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/12B01D46/42B01D46/44
CPCB01D46/0039B01D46/103B01D46/12B01D46/4218B01D46/448B01D2273/20B01D2267/70B01D2267/30B01D46/90B01D46/56B01D46/70
Inventor 朱书成
Owner HENAN DRAGON INTO COAL TECH CO LTD