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Tail gas purification device

A tail gas purification device and tail gas technology, which are applied in chemical instruments and methods, fixed tubular conduit components, and use of liquid separation agents, etc., can solve the problems of low heat energy recovery efficiency and low exhaust gas purification efficiency, and achieve high heat energy recovery efficiency and high efficiency. The effect of high exhaust gas purification efficiency

Inactive Publication Date: 2017-10-13
卓卫民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low exhaust gas purification efficiency and low heat energy recovery efficiency in the prior art, thereby providing an exhaust gas purification device with high exhaust gas purification efficiency and high heat energy recovery efficiency

Method used

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Effect test

Embodiment 1

[0040] Such as figure 1 with figure 2The specific embodiment of a tail gas purification device of the present invention shown includes a throttling gas-liquid exchanger 1, a connecting pipe 2 and a first heat exchanger 3, and the throttling gas-liquid exchanger 1 has a first An air inlet 11 and a first air outlet 12, the inner cavity of the throttling gas-liquid exchanger 1 is also provided with a connection to the throttle between the first air inlet 11 and the first air outlet 12 A throttling baffle 13 extending from the liquid surface in the flow-type gas-liquid exchanger 1, the throttling baffle 13 divides the inner cavity into an air intake cavity and an exhaust cavity, and the inner wall of the exhaust cavity is provided with There are several water baffles 14, and at least one of the water baffles 14 is at a different level from the other water baffles 14, and on the projected surface along the liquid surface in the throttling gas-liquid exchanger 1, the The water ba...

Embodiment 2

[0046] The difference between this embodiment and Embodiment 1 is that the gas outlet of the condensed water separator 4 is also connected to the second heat exchanger, and the gas outlet of the second heat exchanger is connected with an exhaust gas outlet pipe 5 .

[0047] The tail gas at the gas outlet of the condensed water separator 4 is saturated humid air. During the discharge process, the water vapor inside the tail gas condenses, and white smoke is generated. After the second heat exchanger is heated up, the tail gas becomes unsaturated humid air. White smoke will not be produced during the discharge process, and the exhaust gas has a certain temperature, and the exhaust gas can be discharged to a higher altitude.

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Abstract

The invention provides a tail gas purification device. The tail gas purification device comprises a throttling type gas-liquid exchanger, a connecting pipe and a first heat exchanger, wherein the throttling type gas-liquid exchanger is provided with a first gas inlet and a first gas outlet; tail gas firstly enters from the gas inlet and then is subjected to heat and mass exchange and isoenthalpy exchange; one end of the connecting pipe is connected with the first gas outlet; the first heat exchanger is connected with the other end of the connecting pipe; the tail gas enters the throttling type gas-liquid exchanger from the first gas inlet and is subjected to strong heat and mass exchange with water in the throttling type gas-liquid exchanger; ash content in the tail gas and a water-soluble odorous component are captured by the water and the tail gas is purified for the first time; the water-soluble odorous component which is not removed and water vapor are subjected to heat emission and condensed in the first heat exchanger to form condensed water and the tail gas is purified for the second time; the humidity of the tail gas enters the first heat exchanger is relatively great so that the heat exchange efficiency of the tail gas in the first heat exchanger is relatively high; the device has high tail gas purification efficiency, hot water in the heat exchanger can be connected to domestic water and the recycling efficiency of heat energy is relatively high.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to a tail gas purification device. Background technique [0002] Humidification and drying are common processes in modern industrial production processes, and are widely used in food, printing and dyeing, papermaking, chemical, sheet metal, tobacco and other industries. In the process of humidification and drying, a large amount of high-temperature and high-humidity tail gas will be produced. The tail gas contains high heat and contains peculiar smell and dust. If it is directly discharged, it will pollute the air. [0003] The odor components in the tail gas are divided into two types: water-soluble and insoluble. The treatment mechanism is different. The water-soluble components can be dissolved in water and can be removed by gas-liquid exchange in the wet dust collector, but the insoluble components cannot be dissolved in water due to their large molecular weight. , c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/02B01D53/18B01D53/00F28D7/00
CPCB01D47/02B01D53/002B01D53/18F28D7/00B01D2252/103Y02P70/10
Inventor 卓宇轩滕明张峰万可可杜朝阳吴东江
Owner 卓卫民