A low-concentration flue gas detection pretreatment water removal method and device and its flue gas detection application system

A flue gas detection and pretreatment technology, applied in the flue gas detection application system, low concentration flue gas detection pretreatment and water removal field, can solve the problem of acid gas component loss, etc., to reduce the component loss rate and acid concentration. The effect of optimizing and increasing costs

Active Publication Date: 2018-11-06
南京桓辰碳中和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of loss of acid gas components in the pretreatment process of flue gas detection and pretreatment of pollution sources, the present invention provides a low-concentration flue gas detection pretreatment water removal method and device and its flue gas detection application system. Through the above device and method, no Lost or less lost acid gas components to achieve more accurate detection of low-concentration smoke detection

Method used

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  • A low-concentration flue gas detection pretreatment water removal method and device and its flue gas detection application system
  • A low-concentration flue gas detection pretreatment water removal method and device and its flue gas detection application system
  • A low-concentration flue gas detection pretreatment water removal method and device and its flue gas detection application system

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Experimental program
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Effect test

Embodiment 1

[0037] Such as Figure 4 Shown: a low-concentration flue gas detection pretreatment water removal device, including a sampling pipe 8, a pretreatment unit 10 and a heating line, the pretreatment unit 10 includes an acid addition unit and a condensation unit, such as figure 1 As shown: the acid adding unit is composed of a container 1 for acid liquid, an air circulation pipe 2, a three-way valve 5 and a pump 3. The pump 3 pumps the acid liquid into the pipeline leading to the condensing unit, and the condensing unit is the condenser 11 , the above-mentioned components are connected through pipeline 9, and the container for holding the acid liquid is connected with the pump through a pipeline, and the material of the pipeline is acid corrosion-resistant material such as PTFE; the pump and the three-way valve are connected through a pipeline, and the heating wire is wound around the pipeline 6 Heating, the control temperature range is 70-100°C, and the pipe material is acid corrosi...

Embodiment 2

[0047] Device and system, with embodiment 1. The flue gas passes through the sampling pipe from the flue, which contains a filter to filter out large particles of smoke, and then enters the condenser through the heating pipe. At the connection between the heating pipe and the condenser, a three-way valve is used to inject 30% (mass percentage ) phosphoric acid solution, the phosphoric acid solution enters the condensing condenser together with the flue gas, and after condensation removes water, the flue gas enters the gas analyzer through the gas pipeline to analyze SO 2 , NO, NO 2 Concentrations of other gas components.

[0048] Heat the pipeline between the pump and the three-way valve to 100°C, the three-way valve to 100°C, and the connection between the three-way valve and the condenser to 100°C.

[0049] To verify the loss rate of gas components in the above method, the method is as follows:

[0050] Pass SO through the sampling tube 2 , NO, NO 2 The content is 50mg / ...

Embodiment 3

[0053] Device and system, with embodiment 1. The flue gas passes through the sampling pipe from the flue, which contains a filter to filter out large particles of smoke, and then enters the condenser through the heating pipe. At the connection between the heating pipe and the condenser, a three-way valve is used to inject 1% (mass percentage ) phosphoric acid solution, the phosphoric acid solution enters the condensing condenser together with the flue gas, and after condensation removes water, the flue gas enters the gas analyzer through the gas pipeline to analyze SO 2 , NO, NO 2 Concentrations of other gas components.

[0054] Heat the pipeline between the pump and the three-way valve to 70°C, the three-way valve to 70°C, and the connection between the three-way valve and the condenser to 70°C.

[0055] To verify the loss rate of gas components in the above method, the method is as follows:

[0056] Pass SO through the sampling tube 2 , NO, NO 2 The content is 50mg / m 3...

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Abstract

The invention discloses a low-concentration flue gas detection, pretreatment and water-removal method and device, and a flue gas detection application system, and belongs to the field of flue gas detection. The device comprises a sampling pipe, a pretreatment unit and a heating wire, wherein the pretreatment unit comprises an acid adding unit and a condensation unit; the acid adding unit is composed of a container for containing an acid liquid, an air ventilating pipe, a three-way valve and a pump; the pump is used for pumping the acid liquid into a pipeline of the condensation unit; the container for containing the acid liquid is connected with the pump through a pipeline; the pump is connected with the three-way valve through a pipeline; the heating wire winds the periphery of the pipeline to heat; and the pipeline between an acid adding opening and an inlet of a condenser is heated through the heating wire. Through the device, the system and the method, no missing or low missing of acid gas components is realized; and relatively accurate detection of a low-concentration flue gas is realized.

Description

technical field [0001] The invention relates to the field of smoke detection, in particular to a low-concentration smoke detection pretreatment water removal method and device and a smoke detection application system thereof. Background technique [0002] The flue gas emitted by pollution sources such as thermal power plants, chemical plants and cement plants is strictly monitored as an important pollution source, and the parameters such as the type, concentration, and total amount of pollution sources are measured by various flue gas analysis systems. However, the flue gas directly discharged from the pollution source usually contains a large amount of dust, moisture, etc., which will cause corrosion, blockage and other damage to the measuring instrument. Therefore, before using the measuring instrument for detection, the flue gas directly discharged from the pollution source needs to be pretreated, including dust removal and water removal. , Generally, dust is removed thro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/34
Inventor 刘德允范黎锋陈莹王思敏董拯
Owner 南京桓辰碳中和科技有限公司
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