Coke oven waste gas sampling device

Abstract

The utility model belongs to the technical field of coke oven sampling equipment, and relates to a coke oven waste gas sampling device which comprises a coke oven waste gas disc, an exhaust pipe is arranged on the coke oven waste gas disc, the exhaust pipe is connected with a sampling pipe, the sampling pipe is connected to a cooling pipe, the cooling pipe is connected to a sucking pump, and the rear side of the sucking pump is connected with a sampling ball through a connecting pipe. The flue gas sampling device is special for the coke oven, simple in structure, convenient to maintain, rapid and convenient in flue gas temperature cooling and sampling and capable of improving efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of coke oven sampling equipment, and in particular relates to a coke oven exhaust gas sampling device. Background Art

[0002] A coke oven is a piece of equipment used in the coking process to pyrolyze solid fuels such as coal under high temperature conditions to volatilize the volatile substances in them to obtain coke. Coke oven exhaust gas is the exhaust gas generated in the coke production process, which has the characteristics of high temperature, high pressure, high humidity, high concentration and complex composition.

[0003] The flue gas temperature of the 7.63-meter coke oven exhaust gas tray is between 300℃ and 400℃, and the suction is about -360Pa. In order to improve and regulate the combustion of the coke oven, it is necessary to regularly sample the exhaust gas and analyze the excess air coefficient. The excess air coefficient refers to the ratio of the actual air volume to the theoretical air volume during the combustion of the coke oven. By analyzing the excess air coefficient, we can understand the sufficiency and efficiency of the combustion reaction, and determine whether it is necessary to adjust the air supply to improve the combustion state of the coke oven. The main purpose of analyzing the exhaust gas sample is to determine the content of oxygen and carbon monoxide in it, and then calculate the excess air coefficient.

[0004] In the laboratory, the exhaust gas sample will be subjected to gas chromatography or other chemical analysis methods to quantitatively determine the content of oxygen and carbon monoxide. Then, according to the chemical equilibrium equation of the combustion reaction, the ratio of the actual air volume to the theoretical air volume is calculated to obtain the excess air coefficient.

[0005] Since the flue gas temperature is relatively high and the negative pressure is relatively large, the traditional sampling negative pressure ball cannot meet the requirements of use and regulation. Therefore, a coke oven exhaust gas sampling device is proposed. Utility Model Content

[0006] The utility model aims to provide a coke oven exhaust gas sampling device with a coke oven exhaust gas sampling function, which solves the problem in the prior art that the flue gas temperature is relatively high, the negative pressure is relatively large, and the traditional sampling negative pressure ball cannot meet the use and adjustment requirements.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: the utility model provides a coke oven exhaust gas sampling device, including a coke oven exhaust gas tray, on which an exhaust pipe is arranged, the exhaust pipe is connected to a sampling tube, the sampling tube is connected to a cooling pipe, the cooling pipe is connected to an exhaust pump, and the rear side of the exhaust pump is connected to a sampling ball through a connecting pipe.

[0008] Preferably, the sampling tube is L-shaped.

[0009] Preferably, the cooling pipe is a long steel pipe.

[0010] Preferably, the connecting tube is a silicone hose.

[0011] Preferably, the sampling ball is a soft expandable sphere.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. The utility model is specially designed for coke ovens, with simple structure, convenient maintenance, cooling of flue gas temperature, fast and convenient sampling, and improved efficiency;

[0014] 2. The utility model has the function of sampling coke oven exhaust gas, which solves the problem in the prior art that the flue gas temperature is relatively high, the negative pressure is relatively large, and the traditional sampling negative pressure ball cannot meet the use and adjustment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0016] Figure 1 It is a structural schematic diagram of a coke oven exhaust gas sampling device;

[0017] In the above figure, 1. coke oven exhaust gas tray, 2. exhaust pipe, 3. sampling tube, 4. cooling tube, 5. vacuum pump, 6. connecting tube, 7. sampling ball. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1, as Figure 1As shown, a coke oven exhaust gas sampling device includes a coke oven exhaust gas tray 1. The coke oven exhaust gas tray 1 is an outlet for exhaust gas in the coke oven, and exhaust gas is led out of the coke oven to play a role of gas guide. The coke oven exhaust gas tray 1 is provided with an exhaust pipe 2, which is connected to the coke oven exhaust gas tray 1 to lead the exhaust gas from the coke oven exhaust gas tray 1, providing an outlet for subsequent sampling. The exhaust pipe 2 is connected to a sampling tube 3, which is connected to the exhaust pipe 2 and is used to lead the coke oven exhaust gas into the subsequent pipeline for convenient sampling and analysis.

[0021] The sampling tube 3 is connected to the cooling tube 4, which is connected to the sampling tube 3 and plays a role in cooling the coke oven exhaust gas. After the exhaust gas passes into the cooling tube 4, the exhaust gas is cooled by heat exchange with the cooling medium or the environment, so that the temperature of the exhaust gas is reduced to a range suitable for sampling. The cooling tube 4 is connected to the suction pump 5, which is used to generate negative pressure to pump the coke oven exhaust gas to ensure the flow of the exhaust gas.

[0022] The rear side of the vacuum pump 5 is connected to the sampling ball 7 through the connecting pipe 6. The connecting pipe 6 plays a connecting role to guide the extracted coke oven exhaust gas into the sampling ball 7 for further processing. The sampling ball 7 is used to collect coke oven exhaust gas samples. Through the expansion and collection of the sampling ball 7, the control and collection of the coke oven exhaust gas samples are realized, which is convenient for subsequent analysis and detection.

[0023] The following is a detailed description of the design of the above key components:

[0024] The sampling tube 3 is L-shaped, and the L-shaped design can conveniently introduce the exhaust gas sample into the cooling tube 4 .

[0025] The cooling tube 4 is a long steel tube. The steel long tube design can effectively dissipate heat and quickly cool the high-temperature exhaust gas to a safe temperature range to ensure the safety of the experimenters and the accuracy of the sample analysis. The steel material has good heat resistance and corrosion resistance, so it is suitable for processing high-temperature gases. In addition, the structure is strong and not easy to deform, which is conducive to long-term stable use. As a preferred embodiment, the cooling tube 4 can be designed as a spiral long tube to extend the length of the cooling tube 4 to improve the cooling effect.

[0026] The connecting tube 6 is a silicone hose. Silicone has good heat resistance and chemical corrosion resistance, and is soft, wear-resistant, cold-resistant, aging-resistant, and non-deformable. This makes the silicone hose well adapted to the connection requirements of the exhaust gas sampling pipeline, and can ensure that the sampling process is not disturbed by the external environment, while avoiding gas leakage.

[0027] The sampling ball 7 is a soft expandable sphere that can accept gas and deform and expand. When sampling, the gas is completely sampled by compressing the sampling ball 7 to avoid gas leakage and ensure the accuracy of sampling. The design of soft materials is also conducive to improving air tightness, reducing the possibility of gas leakage, and facilitating maintenance and replacement.

[0028] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A coke oven exhaust gas sampling device, characterized in that: It comprises a coke oven waste gas tray, on which an exhaust pipe is arranged, the exhaust pipe is connected with a sampling pipe, the sampling pipe is connected with a cooling pipe, the cooling pipe is connected with an air pump, and the rear side of the air pump is connected with a sampling ball through a connecting pipe.

2. A coke oven exhaust gas sampling device according to claim 1, characterized in that: The sampling tube is L-shaped.

3. A coke oven exhaust gas sampling device according to claim 1, characterized in that: The cooling pipe is a long steel pipe.

4. A coke oven exhaust gas sampling device according to claim 1, characterized in that: The connecting pipe is a silicone hose.

5. The coke oven exhaust gas sampling device according to claim 1, characterized in that: The sampling ball is a soft expandable sphere.

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