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Efficient de-whitening device and operation method thereof

An operation method and dewhitening technology, applied in the field of dewhitening devices, can solve the problems of ineffective control of NOx emissions and achieve stable operation, low cost and wide adaptability

Pending Publication Date: 2017-06-13
ZHEJIANG HUANXING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main reason is that my country has not effectively controlled NOx emissions while controlling SO2 emissions.

Method used

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  • Efficient de-whitening device and operation method thereof
  • Efficient de-whitening device and operation method thereof

Examples

Experimental program
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Effect test

Embodiment

[0021] Example: such as figure 1 and figure 2 As shown, a high-efficiency whitening device includes a spray tower 1, a heat exchanger 2 and an exhaust pipe 3, and the upper end of the spray tower 1 is connected to the upper part of the heat exchanger 2 through a flue gas communication pipe 4 The bottom of the heat exchanger 2 communicates with the exhaust pipe 3, the lower end of the heat exchanger 2 communicates with the fan 5, and the upper end of the heat exchanger 2 is provided with the exhaust pipe 3. The intermediate evacuation pipe 6 communicated with the fan 5 through the heat exchanger 2 .

[0022] The bottom of the heat exchanger 2 is provided with a drain valve 7 .

[0023] The operation method of the high-efficiency whitening device is carried out in the following steps:

[0024] The flue gas passes through the demister for indirect gas-gas heat exchange, and a large amount of water is condensed. The condensed water accounts for 15-30% of the total water in the...

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Abstract

The invention relates to a de-whitening device, in particular to an efficient de-whitening device and an operation method thereof. The efficient de-whitening device comprises a spraying tower, a heat exchanger and an emptying pipe, the upper end of the spraying tower and the upper portion of the heat exchanger are communicated through a smoke communicating pipe, the bottom of the heat exchanger is communicated with the emptying pipe, the lower end of the heat exchanger is communicated with a fan while the upper end of the same is provided with a hollow emptying pipe communicated with the emptying pipe, and the middle emptying pipe is communicated with the fan through the heat exchanger. The efficient de-whitening device is high in de-whitening efficiency, low in manufacturing cost, convenient to maintain, stable in running and wide in adaptation range.

Description

technical field [0001] The invention is a whitening device, in particular to a high-efficiency whitening device and its operating method. Background technique [0002] Nitrogen oxides include N2O, NO, NO2, N2O3, N2O4, N2O5, etc. They are collectively called nitrogen oxides, often expressed as NOx. Among them, NO and NO2 are the main pollutants that pollute the atmosphere. Naturally formed NOx comes from the decomposition of nitrogen-containing organic matter by bacteria, lightning, volcanic eruptions, forest fires, etc., and it is about 500 million tons per year. The NOx produced by human activities is about 50 million tons per year, which is 1 / 10 of the former. However, due to the high concentration of NOx emitted by human beings and the concentrated emission, the harm caused is relatively large. More than 90% of NOx emitted by human activities comes from the fuel combustion process. For example, when fuels in power plant boilers, various industrial furnaces, civil stove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/00F23J15/02F23J15/06
CPCF23J15/00F23J15/02F23J15/06Y02E20/30
Inventor 俞其林刘小雷邓小文王凯军张悦张鸿涛
Owner ZHEJIANG HUANXING MACHINERY
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