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Pretreatment system

A pretreatment and shell technology, which is applied in the field of flue gas purification, can solve problems such as increased system maintenance and maintenance costs, air leakage in gas lines, joint solenoid valves, and analyzer corrosion, reducing maintenance costs and reducing maintenance costs. amount, the effect of preventing corrosion and damage

Inactive Publication Date: 2012-05-09
BEIJING SDL TECH
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Problems solved by technology

[0007] Acid mist is highly corrosive. If acid mist enters the system equipment when the CEMS system is working, it will cause serious damage to some parts of the system, such as corrosion of joints, solenoid valves, and analyzers. Cause air leakage in the gas pipeline, etc., which seriously increases the maintenance amount and cost of the system

Method used

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Embodiment Construction

[0024] CEMS: Automatic flue gas monitoring system, which is mainly used to continuously detect the concentration and total emission of gaseous pollutants and particles emitted by fixed pollution sources, and transmit the information to the competent department in real time.

[0025] PVC: PVC material is polyvinyl chloride, which is one of the largest plastic products in the world; it is cheap, widely used, has non-flammability, high strength, weather resistance and excellent geometric stability; it is resistant to oxidants, Both reducing agents and strong acids are very resistant.

[0026] The core of the present invention is to provide a pretreatment system, which can not only dehumidify and dedust the flue gas, but also effectively remove and absorb sulfur trioxide, so as to prevent the acid mist formed by sulfur trioxide from affecting the CEMS system. Corrosion and damage, reducing the amount of maintenance and maintenance costs of the system.

[0027] In order to enable ...

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Abstract

The invention discloses a pretreatment system, which comprises a dehumidifying device, a dust removing device and an acid mist filter, wherein the acid mist filter is arranged between the dehumidifying device and the dust removing device. Before being transmitted to a flue gas analysis cabinet under the action of a pump, flue gas enters the pretreatment system provided by the invention firstly, so that dehumidifying and dust removing treatment can be performed on flue gas, sulfur trioxide in the flue gas can be removed and absorbed effectively, corrosion and damage of acid mist formed by sulfur trioxide on a CEMS (Continuous Emission Monitoring System) are prevented, and the maintenance quantity and maintenance cost of the system are lowered greatly.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a pretreatment system. Background technique [0002] CEMS system, that is, the flue gas automatic monitoring system, is mainly used for flue gas parameters (temperature, pressure, humidity, flow, oxygen content, etc.), gaseous pollutants (sulfur dioxide, NOx, etc.), particulate pollutant concentration and total emission of fixed pollution sources The continuous monitoring of environmental protection reports and curves can be generated through the data acquisition and processing system, and the data can be transmitted to various environmental protection authorities in accordance with environmental protection requirements. [0003] The monitoring of gaseous pollutants adopts the direct extraction method. The direct extraction method is to use a special heating sampling probe to extract the flue gas from the flue, and transmit it through heat tracing so that the flue ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34
Inventor 宋婷姗
Owner BEIJING SDL TECH
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