CN207662870U - Pyrolysis gas oxygen content detecting system - Google Patents

Abstract

The utility model discloses a pyrolysis gas oxygen content detection system, comprising: a gas purification device, the gas purification device includes: a closed tank, a water storage area is defined in the closed tank, the bottom of the closed tank has a sewage outlet, and the side wall has a The overflow port and the top have a purified pyrolysis gas outlet; the pyrolysis gas delivery pipeline extends from the side wall of the closed tank, and the end extends into the water storage area; the water delivery pipeline, the water delivery pipeline consists of The side wall of the airtight tank protrudes, and the end extends to the top of the water storage area; the spray device, the spray device is arranged at the water outlet end of the water pipeline; the condenser, the condenser has a gas inlet and a gas outlet, and the condenser has a communication The gas inlet and the gas outlet are condensing coils, the gas inlet is connected to the purified pyrolysis gas outlet; the oxygen detector is connected to the gas outlet. The detection system can be used to continuously, efficiently and accurately detect the oxygen content of the pyrolysis gas of the low-rank pulverized coal fast pyrolysis furnace.

Description

Pyrolysis gas oxygen content detection system

technical field

The utility model belongs to the field of detection equipment, in particular, the utility model relates to a pyrolysis gas oxygen content detection system.

Background technique

my country's energy structure is characterized by "lack of oil, less gas, and rich coal". The dependence on foreign oil and natural gas will reach 71% and 42% respectively in 2030; my country is rich in coal resources, but medium and low-rank coals (lignite, long-flame coal, bituminous coal) account for more than 55%. In addition to processing, most of them are used for direct combustion. The direct combustion of coal leads to the fact that the oil and gas resources rich in coal have not been fully refined and utilized, and the thermal efficiency of direct combustion is low, which seriously damages the environment. The pyrolysis of coal is to heat coal under an inert atmosphere to produce semi-coke, gas and tar, etc. These products can be used in stages, fully extracting oil and gas resources, and improving the comprehensive utilization efficiency of coal . In 2014, my country's thermal power industry consumed nearly 2 billion tons of steam coal. If coal uses low-rank pulverized coal rapid pyrolysis devices before burning power, my country's thermal power industry will produce more than 140 million tons of oil and 200 billion cubic meters of natural gas for the country every year. meters or more.

On March 9, 2015, the Ministry of Industry and Information Technology and the Ministry of Finance jointly issued the "Action Plan for Clean and Efficient Utilization of Coal in the Industrial Field (2015-2020)", making a layout for the clean utilization of coal in the industrial field. The action plan recommends 21 clean and efficient coal utilization technologies in the industrial field, among which the recommended technology is the core energy-saving emission reduction and atmospheric haze control technology of Shenwu Environmental Protection Energy Group Company with independent intellectual property rights: the new technology of graded utilization of medium and low-grade coal The technology is the use of low-order pulverized coal pyrolysis to improve quality and use patented technology in stages. The medium-low temperature fast pyrolysis furnace for low-rank pulverized coal is the key equipment for extracting oil and gas from low-rank pulverized coal. It is necessary to detect the oxygen content in the pyrolysis gas of low-rank pulverized coal, and there is an urgent need for a targeted treatment of low-rank pulverized coal. Equipment for detecting the oxygen content in coal pyrolysis gas.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, an object of this utility model is to propose a pyrolysis gas oxygen content detection system, which can realize continuous, efficient and accurate detection of pyrolysis gas oxygen content of low-grade pulverized coal medium-low temperature fast pyrolysis furnace.

According to one aspect of the utility model, the utility model proposes a pyrolysis gas oxygen content detection system, according to a specific embodiment of the utility model, the pyrolysis gas oxygen content detection system includes: a gas purification device, the gas purification The device includes: an airtight tank body, the water storage area is defined in the airtight tank body, the bottom end of the airtight tank body has a sewage outlet, the side wall has an overflow port, and the top has a purified pyrolysis gas outlet; the pyrolysis gas delivery pipeline , the pyrolysis gas delivery pipeline extends from the side wall of the closed tank, and the end extends into the water storage area; the water delivery pipeline, the water delivery pipeline extends from the side wall of the closed tank inlet, and the end extends to the top of the water storage area; a spray device, the spray device is arranged at the water outlet end of the water pipeline; a condenser, the condenser has a gas inlet and a gas outlet, and the condenser There is a condensing coil connected to the gas inlet and the gas outlet, the gas inlet is connected to the purified pyrolysis gas outlet; an oxygen detector, and the oxygen detector is connected to the gas outlet.

Therefore, by adopting the pyrolysis gas oxygen content detection system of the above-mentioned embodiment of the utility model, the oxygen content detector can be effectively protected, its service life can be prolonged, and the continuous, efficient and accurate detection of the pyrolysis gas oxygen content can be realized, thereby more A good grasp of the operating conditions in the pyrolysis furnace ensures the safe and reliable operation of the pyrolysis furnace.

In addition, the pyrolysis gas oxygen content detection system according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

In the present invention, the pyrolysis gas oxygen content detection system further includes: a fan, which is located outside the closed tank and arranged on the pyrolysis gas delivery pipeline. Thus, the pyrolysis gas to be detected can be effectively delivered into the closed tank.

In the present invention, the end of the pyrolysis gas delivery pipeline extends to the center of the water storage area. The cleaning and cooling effect of the pyrolysis gas can thus be further increased.

In the present invention, the spraying device is located directly above the end of the pyrolysis gas delivery pipeline. In this way, the pyrolysis gas can be effectively covered, and the purification and cooling effect can be improved.

In the utility model, the spray device is a spherical spray device. As a result, the coverage area can be further increased.

In the utility model, the water delivery pipeline has an inlet for cleaning hot water. Thereby, the airtight tank body can be cleaned.

In the present invention, a valve is arranged between the gas inlet and the purified pyrolysis gas outlet.

In the utility model, the condenser is an electric refrigeration condenser. In this way, the humidity of the pyrolysis gas can be effectively controlled.

In the present utility model, the pyrolysis gas oxygen content detection system further includes: a detection chamber, the detection part of the oxygen detector is arranged in the detection chamber, the detection chamber has a sample gas inlet and a sample gas outlet, and the sample gas The gas inlet communicates with the gas outlet of the condenser. By setting up the detection chamber, the purified and cooled pyrolysis gas can be temporarily stored to facilitate the detection of the oxygen detector.

Description of drawings

Fig. 1 is a schematic structural diagram of a pyrolysis gas oxygen content detection system according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

According to one aspect of the utility model, the utility model proposes a pyrolysis gas oxygen content detection system. The pyrolysis gas oxygen content detection system of a specific embodiment of the present invention will be described in detail below with reference to FIG. 1 .

According to a specific embodiment of the present invention, the pyrolysis gas oxygen content detection system includes: a gas purification device 100 , a condenser 200 and an oxygen detector 300 .

Wherein, the gas purification device 100 includes: a closed tank body 10 , a pyrolysis gas delivery pipeline 20 , a water delivery pipeline 30 and a spraying device 40 . A water storage area 11 is defined in the airtight tank body 10, the bottom end of the airtight tank body 10 has a sewage outlet 12, the side wall has an overflow port 13, and the top has a purified pyrolysis gas outlet 14; the pyrolysis gas delivery pipeline 20 is formed by the airtight tank body The side wall of the body 10 extends into the water storage area 11, and the end extends into the water storage area 11; the water delivery pipeline 30 extends from the side wall of the airtight tank body 10, and the end extends to the top of the water storage area 11; the spray device 40 is arranged on the water delivery area Water pipeline 30 water outlet end. The condenser 200 has a gas inlet 210 and a gas outlet 220 . The condenser 200 has a condensation coil 230 communicating with the gas inlet and the gas outlet. The gas inlet 210 communicates with the purified pyrolysis gas outlet 14 . The oxygen detector 300 is connected to the gas outlet 220 .

During the use of the pyrolysis gas oxygen content detection system of the above-mentioned embodiment of the utility model, first, the pyrolysis gas enters the water storage area 11 in the airtight tank body 10 through the pyrolysis gas delivery pipeline 20, and the pyrolysis gas is removed by washing with water. tar and dust, to achieve the purpose of preliminary purification and cooling, and the sewage in the airtight tank body 10 is discharged through the overflow port 13. At the same time, the spray water is passed into the airtight tank 10 through the water pipeline 30 and the spray device 40. After the pyrolysis gas is discharged from the water storage area 11, it is washed again through the spray water to achieve the purpose of secondary purification and cooling; secondly, the purification The final pyrolysis gas enters the condenser 200 from the purified pyrolysis gas outlet 14 on the top of the closed tank 10 for condensation treatment, so as to cool down and dehumidify the pyrolysis gas; finally, the pyrolysis gas after condensation treatment enters the oxygen detection system. The final oxygen content detection is carried out in the instrument 300.

Therefore, by adopting the pyrolysis gas oxygen content detection system of the above-mentioned embodiment of the utility model, the oxygen content detector can be effectively protected, its service life can be prolonged, and the continuous, efficient and accurate detection of the pyrolysis gas oxygen content can be realized, thereby more A good grasp of the operating conditions in the pyrolysis furnace ensures the safe and reliable operation of the pyrolysis furnace.

According to a specific embodiment of the present invention, as shown in FIG. 1 , the pyrolysis gas oxygen content detection system further includes: a fan 50 , which is located outside the airtight tank 10 and arranged on the pyrolysis gas delivery pipeline 20 . Thus, the blower 50 can smoothly transport the pyrolysis gas into the airtight tank body 10 , and then provide a test sample for the detection of the oxygen content. According to a specific example of the present invention, a gas flow meter can be further installed on the pyrolysis gas delivery pipeline 20, so as to monitor the gas volume of the sample gas to be tested, and further improve the detection accuracy of the oxygen content.

According to a specific embodiment of the present invention, as shown in FIG. 1 , the end of the pyrolysis gas delivery pipeline 20 extends to the center of the water storage area 11 . In this way, it can be ensured that the pyrolysis gas can fully contact with water, so as to improve the purification effect. In addition, according to a specific example of the present invention, the spray device 40 is located directly above the end of the pyrolysis gas delivery pipeline 20 . Thereby, the mist sprayed by the spraying device 40 can completely cover the pyrolysis gas discharged from the water storage area 11, so as to further improve the purification and cooling effect on the pyrolysis gas.

According to a specific embodiment of the present invention, the spray device 40 may be a spherical spray device. In this way, the coverage area of the mist can be further increased, and the purification and cooling effects of the pyrolysis gas can be improved.

According to a specific embodiment of the present utility model, as shown in FIG. 1 , the water delivery pipe 30 has a hot water inlet 31 for cleaning dirt. By opening the cleaning hot water inlet 31, the tank body can be sprayed with high-temperature cleaning water through the spray device 40, and the dirty liquid is discharged through the sewage outlet 12 at the bottom of the airtight tank body 10. After cleaning, it can be resumed for detection and use. Therefore, the oxygen content detection system of the pyrolysis gas in the embodiment of the utility model can more conveniently clean the airtight tank body 10 by using high-temperature and high-pressure hot water.

According to a specific embodiment of the present invention, as shown in FIG. 1 , a valve 15 is provided between the gas inlet 210 and the purified pyrolysis gas outlet 14 to ensure online maintenance of the condenser 200 and the oxygen detector 300 .

According to a specific embodiment of the present invention, the condenser 200 is an electric refrigeration condenser. Therefore, the temperature of the electric cooling condenser can be adjusted, and the temperature inside the condenser 200 can be regulated in real time according to needs, thereby controlling the humidity of the sample gas and improving the accuracy of subsequent detection.

According to a specific embodiment of the present invention, as shown in Figure 1, the pyrolysis gas oxygen content detection system further includes: a detection chamber 400, the detection part of the oxygen detector 300 is arranged in the detection chamber 400, and the detection chamber 400 has a sample gas inlet 410 and the sample gas outlet 420 , the sample gas inlet 410 communicates with the gas outlet 220 of the condenser 200 . By setting the detection chamber 400 , the purified and cooled pyrolysis gas can be buffered, the flow rate and fluctuation of the gas in the detection chamber can be reduced, and the detection accuracy of the oxygen detector 300 can be improved.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (9)

1. A pyrolysis gas oxygen content detection system is characterized in that, comprising: A gas purification device, the gas purification device comprising: An airtight tank body, the water storage area is defined in the airtight tank body, the bottom end of the airtight tank body has a sewage outlet, the side wall has an overflow port, and the top has a purified pyrolysis gas outlet; Pyrolysis gas delivery pipeline, the pyrolysis gas delivery pipeline extends from the side wall of the closed tank, and the end extends into the water storage area; a water delivery pipeline, the water delivery pipeline extends from the side wall of the airtight tank, and the end extends above the water storage area; A spraying device, the spraying device is arranged at the water outlet end of the water pipeline; A condenser, the condenser has a gas inlet and a gas outlet, the condenser has a condensation coil connected to the gas inlet and the gas outlet, and the gas inlet is connected to the purified pyrolysis gas outlet; An oxygen detector connected to the gas outlet. 2. The pyrolysis gas oxygen content detection system according to claim 1, further comprising: a fan, the fan is located outside the closed tank and arranged on the pyrolysis gas delivery pipeline. 3. The pyrolysis gas oxygen content detection system according to claim 1, characterized in that, the end of the pyrolysis gas delivery pipeline extends to the center of the water storage area. 4. The pyrolysis gas oxygen content detection system according to claim 3, wherein the spraying device is located directly above the end of the pyrolysis gas delivery pipeline. 5. The pyrolysis gas oxygen content detection system according to claim 4, characterized in that the spray device is a spherical spray device. 6. The pyrolysis gas oxygen content detection system according to claim 1, characterized in that, the water delivery pipeline has an inlet for cleaning hot water. 7. The pyrolysis gas oxygen content detection system according to claim 1, characterized in that a valve is arranged between the gas inlet and the purified pyrolysis gas outlet. 8. The pyrolysis gas oxygen content detection system according to claim 1, wherein the condenser is an electric refrigeration condenser. 9. The pyrolysis gas oxygen content detection system according to claim 1, further comprising: a detection chamber, the detection part of the oxygen detector is arranged in the detection chamber, and the detection chamber has a sample gas inlet and a sample gas outlet, the sample gas inlet communicates with the gas outlet of the condenser.