Sludge pyrolysis device and pyrolysis gas component analysis system

Abstract

The application relates to the field of sludge treatment, in particular to a sludge pyrolysis device and a pyrolysis gas component analysis system, which comprises a gas supply system, a pyrolysis reaction system and a pyrolysis gas detection system; the gas supply system comprises a gas cylinder, a first gas inlet pipe connected with a gas inlet end of the gas cylinder and a first gas outlet pipe connected with a gas outlet end of the gas cylinder; the pyrolysis reaction system comprises a tubular furnace, the tubular furnace is provided with a gas inlet and a gas outlet, the gas inlet of the tubular furnace is connected with a second gas inlet pipe, the gas outlet of the tubular furnace is connected with a second gas outlet pipe, and the first gas outlet pipe is communicated with the second gas inlet pipe; the pyrolysis gas detection system comprises a pyrolysis gas pretreatment system and a detection and analysis system, the pyrolysis gas pretreatment system is communicated with the second gas outlet pipe, the pyrolysis gas pretreatment system is communicated with the detection and analysis system, and the detection and analysis system is communicated with the atmosphere. The application has the effects of efficiently disposing sludge and effectively improving the output rate and recycling rate of sludge pyrolysis combustible gas.

Description

Technical Field

[0001] This application relates to the field of sludge treatment, and in particular to a sludge pyrolysis apparatus and a pyrolysis gas composition analysis system. Background Technology

[0002] Sludge is a byproduct of urban sewage treatment. As urban sewage discharge increases dramatically, sludge production also grows exponentially.

[0003] Currently, pyrolysis technology is commonly used to treat sludge. However, in practice, due to the complex and variable operating conditions, the combustible gases produced by sludge pyrolysis generally suffer from low yield and unstable composition, resulting in low actual reuse efficiency.

[0004] Studies have found that numerous key factors influence the yield and composition of sludge pyrolysis gas, and these factors interact in complex ways. During sludge treatment, various factors such as sludge particle size, sludge composition, pyrolysis temperature, heating rate, and catalyst all significantly affect the generation and composition of sludge pyrolysis gas. These factors collectively determine the efficiency, component ratio, and calorific value of pyrolysis gas generation, thereby affecting the feasibility and efficiency of its subsequent reuse. Utility Model Content

[0005] In order to efficiently dispose of sludge and effectively improve the yield and reuse rate of combustible gas from sludge pyrolysis, this application provides a sludge pyrolysis device and a pyrolysis gas component analysis system.

[0006] This application provides a sludge pyrolysis device and a pyrolysis gas composition analysis system, which adopts the following technical solution:

[0007] A sludge pyrolysis device and a pyrolysis gas component analysis system, comprising:

[0008] A gas supply system includes a gas cylinder and a first gas outlet pipe connected to the gas outlet end of the gas cylinder;

[0009] A pyrolysis reaction system includes a tubular furnace, wherein the tubular furnace is provided with an inlet and an outlet, a second inlet pipe is connected to the inlet of the tubular furnace, and a second outlet pipe is connected to the outlet of the tubular furnace, and the first outlet pipe is connected to the second inlet pipe.

[0010] The pyrolysis gas detection system includes a pyrolysis gas pretreatment system and a detection and analysis system. The pyrolysis gas pretreatment system is connected to the second gas outlet pipe, the pyrolysis gas pretreatment system is connected to the detection and analysis system, and the detection and analysis system is connected to the atmosphere.

[0011] By adopting the above technical solution, the gas supply system is directly connected to the gas inlet of the tubular furnace, ensuring that inert gas enters the reaction chamber without leakage, maintaining an oxygen-free pyrolysis environment, and forming a stable airflow to directionally purge the pyrolysis gas to the pyrolysis gas detection system, avoiding gas residue that could cause component distortion. The pyrolysis gas pretreatment system removes impurities and purifies the oil / dust / water-containing pyrolysis gas before it enters the detection and analysis system, effectively preventing tar condensation from clogging the sensor or droplets from interfering with the detection results, thus improving the accuracy of the analysis results. The detection and analysis system is directly connected to the atmosphere at the end, ensuring that the system operates at normal pressure.

[0012] Preferably, the gas cylinder is filled with high-purity nitrogen, and a sealing flange is installed at the connection between the gas cylinder and the first gas outlet pipe.

[0013] By adopting the above technical solution, the sealing flange eliminates micro-gaps, blocks the infiltration of external air, and prevents oxygen from mixing into the pyrolysis reaction system.

[0014] Preferably, the high-purity nitrogen gas enters the second inlet pipe through the first outlet pipe and purges the tubular furnace through the second inlet pipe, and the tubular furnace contains a quartz tube.

[0015] By adopting the above technical solution, nitrogen gas forms a purging gas flow through the first outlet pipe and the second inlet pipe, replacing the residual oxygen in the tubular furnace. This keeps the internal space of the quartz tube low-oxygen or anaerobic throughout the pyrolysis process, avoiding side reactions of sludge organic matter oxidation. This ensures accurate results for the purity and yield of pyrolysis gas components during testing. The quartz tube effectively resists the corrosive gas erosion generated by sludge pyrolysis under high-temperature nitrogen purging conditions.

[0016] Preferably, the air inlet of the pyrolysis gas pretreatment system is connected to the second air outlet pipe, and the pyrolysis gas passes through the second air outlet pipe into a washing section, a filter membrane section, and a gas-water separation section.

[0017] By adopting the above technical solutions, the washing section dissolves acidic gases to avoid equipment corrosion, and the filter membrane section filters out dust and unemulsified tar to avoid component detection deviations caused by contamination.

[0018] Preferably, the pyrolysis gas pretreatment system includes a flow regulation unit, a pressure regulation unit, a temperature regulation unit, a dust removal unit, a water removal unit, and an oil removal unit connected in sequence. The pyrolysis gas treated by the pyrolysis gas pretreatment system enters the detection and analysis system.

[0019] By adopting the above technical solution, the flow regulation unit first stabilizes the gas flow rate, the pressure regulation unit maintains a constant back pressure, and the temperature regulation unit rapidly cools down the gas to eliminate the thermal expansion effect and avoid re-contamination of dust / water / oil due to parameter fluctuations.

[0020] Preferably, the gas flow rate of the pyrolysis gas entering the detection and analysis system is 0.7-1.2 L / min, and the gas pressure entering the detection and analysis system does not exceed 50 kp.

[0021] By adopting the above technical solution, a flow rate range of 0.7-1.2 L / min ensures that the gas residence time in the infrared analyzer chamber is higher than the minimum response requirement, reducing measurement error. At the same time, stability is guaranteed under the condition of not exceeding 50 kp.

[0022] Preferably, the detection and analysis system includes an infrared gas analyzer, a gas inlet disposed on the infrared gas analyzer, a gas outlet disposed on the infrared gas analyzer, a flow meter, and a filter.

[0023] By adopting the above technical solution, the filter built into the gas inlet intercepts residual dust and oil mist, and the flow meter connected in series at the gas outlet monitors the outflow gas volume in real time. The pyrolysis gas yield is cross-validated by combining the inlet flow data.

[0024] Preferably, the detection and analysis system analyzes the yield of combustible gases such as CO, H2, and CH4 in the pyrolysis gas, and a third gas outlet pipe is connected to the gas outlet, which is in communication with the atmosphere.

[0025] By adopting the above technical solution, the core combustible gas can be directly analyzed, eliminating the error caused by the density change of the gas. The combustible gas can be rapidly diffused into the atmosphere through the third gas outlet pipe, instantly reducing its concentration and avoiding deflagration caused by the accumulation of combustible gas in the analyzer cavity.

[0026] Preferably, the sludge processed in the pyrolysis reaction system needs to be granulated by a granulator, and the sludge used for granulation has a moisture content of 10%-30%.

[0027] By adopting the above technical solution, a moisture content of 10%-30% makes the sludge easier to granulate. After granulation, it forms particles with uniform particle size, which increases the contact area between the nitrogen purge flow and the particles and improves the heat transfer coefficient of the pyrolysis reaction.

[0028] Preferably, the sludge particles granulated by the granulator have a particle size of less than 10 mm, 10-15 mm, or 15-20 mm.

[0029] By adopting the above technical solution, the variation law and yield of the seven pyrolysis components of dried sludge with different particle sizes were recorded to ensure the stability of the experimental results.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The gas supply system is directly connected to the gas inlet of the tubular furnace to ensure that inert gas enters the reaction chamber without leakage, maintains an oxygen-free pyrolysis environment, and forms a stable airflow to directionally purge the pyrolysis gas to the pyrolysis gas detection system, avoiding gas residue that could cause component distortion. The pyrolysis gas pretreatment system removes impurities and purifies the oil / dust / water-containing pyrolysis gas before it enters the detection and analysis system, effectively preventing tar condensation from clogging the sensor or droplets from interfering with the detection results, thus improving the accuracy of the analysis results. The detection and analysis system is directly connected to the atmosphere at the end, ensuring that the system operates at normal pressure.

[0032] 2. Nitrogen gas forms a purging flow through the first outlet pipe and the second inlet pipe, replacing the residual oxygen in the tubular furnace. This keeps the internal space of the quartz tube low-oxygen or anaerobic throughout the pyrolysis process, avoiding side reactions of sludge organic matter oxidation. This ensures accurate results for the purity and yield of pyrolysis gas components during testing. The quartz tube effectively resists the corrosive gases generated by sludge pyrolysis under high-temperature nitrogen purging conditions. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the sludge pyrolysis device and the pyrolysis gas component analysis system in the embodiments of this application.

[0034] Explanation of reference numerals in the attached diagram: 1. Gas supply system; 11. Gas cylinder; 12. First gas outlet pipe; 2. Pyrolysis reaction system; 21. Tubular furnace; 211. Gas inlet; 212. Gas outlet; 213. Second gas inlet pipe; 214. Second gas outlet pipe; 3. Pyrolysis gas detection system; 31. Pyrolysis gas pretreatment system; 311. Washing section; 312. Filter membrane section; 313. Gas-water separation section; 32. Detection and analysis system; 321. Infrared gas analyzer; 322. Gas inlet. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0036] This application discloses a sludge pyrolysis device and a pyrolysis gas component analysis system. (Refer to...) Figure 1The sludge pyrolysis unit and pyrolysis gas component analysis system include a gas supply system 1, a pyrolysis reaction system 2, and a pyrolysis gas detection system 3. The gas supply system 1 includes a gas cylinder 11 and a first outlet pipe 12 connected to the outlet of the gas cylinder 11. The gas cylinder 11 contains high-purity nitrogen, and a sealing flange is installed at the connection between the gas cylinder 11 and the first outlet pipe 12. The pyrolysis reaction system 2 includes a tubular furnace 21, which has an inlet 211 and an outlet 212. A second inlet pipe 213 is connected to the inlet 211 of the tubular furnace 21, and a second outlet pipe 214 is connected to the outlet 212. The first outlet pipe 12 is connected to the second inlet pipe 213. High-purity nitrogen enters the second inlet pipe 213 through the first outlet pipe 12 and purges the tubular furnace 21 through the second inlet pipe 213. The tubular furnace 21 contains a quartz tube. The sealing flange eliminates micro-gaps, blocking external air infiltration and preventing oxygen from entering the pyrolysis reaction system 2. Nitrogen gas forms a purging flow through the first outlet pipe 12 and the second inlet pipe 213, replacing residual oxygen in the tubular furnace 21. This keeps the internal space of the quartz tube low-oxygen or anaerobic throughout the pyrolysis process, avoiding side reactions of sludge organic matter oxidation. This ensures accurate results for the purity and yield of pyrolysis gas components during testing. The quartz tube effectively resists the corrosive gases generated by sludge pyrolysis under high-temperature nitrogen purging conditions.

[0037] The pyrolysis gas detection system 3 includes a pyrolysis gas pretreatment system 31 and a detection and analysis system 32. The pyrolysis gas pretreatment system 31 is connected to the second outlet pipe 214, and the pyrolysis gas pretreatment system 31 is connected to the detection and analysis system 32, which is connected to the atmosphere. The inlet 211 of the pyrolysis gas pretreatment system 31 is connected to the second outlet pipe 214. The pyrolysis gas passes through the second outlet pipe 214, through a washing section 311, a filter membrane section 312, and a gas-water separation section 313. The washing section 311 dissolves acidic gases to prevent equipment corrosion, and the filter membrane section 312 filters out fine dust and unemulsified tar to prevent component detection deviations caused by contamination. The pyrolysis gas pretreatment system 31 includes a flow regulation unit, a pressure regulation unit, a temperature regulation unit, a dust removal unit, a water removal unit, and an oil removal unit connected in sequence. The pyrolysis gas treated by the pyrolysis gas pretreatment system 31 enters the detection and analysis system 32. The flow regulation unit first stabilizes the gas flow rate, the pressure regulation unit maintains a constant back pressure, and the temperature regulation unit rapidly cools down the gas to eliminate the thermal expansion effect and prevent re-contamination of dust / water / oil due to parameter fluctuations.

[0038] The detection and analysis system 32 includes an infrared gas analyzer 321, a gas inlet 322 installed on the infrared gas analyzer 321, a gas outlet installed on the infrared gas analyzer 321, a flow meter, and a filter. The filter built into the gas inlet 322 intercepts residual dust and oil mist, while the flow meter connected in series at the gas outlet monitors the outflow gas volume in real time. The pyrolysis gas yield is cross-validated by combining the inlet flow data. The detection and analysis system 32 analyzes the yield of combustible gases such as CO, H2, and CH4 in the pyrolysis gas. A third gas outlet pipe is connected to the gas outlet and is open to the atmosphere. Direct analysis of the core combustible gases eliminates errors caused by gas density variations. The combustible gases diffuse rapidly through the third gas outlet pipe, instantly reducing their concentration and preventing deflagration caused by the accumulation of combustible gases within the analyzer chamber.

[0039] In an optional embodiment, the composition and yield of sludge pyrolysis gas are analyzed by absorption and combustion methods. Specific implementation details are as follows:

[0040] S1. Inspect the entire pyrolysis unit to ensure that there are no leaks or damage.

[0041] S2. Place the dried sludge evenly into the quartz tube of the tube furnace 21 to ensure uniform heating of the sample, and seal the furnace tube to prevent leakage of the sample during heating.

[0042] S3. Open the valve of nitrogen cylinder 11 and adjust the nitrogen inlet flow rate to continuously inject high-purity nitrogen into the tubular furnace 21, ensuring that the reactor maintains an oxygen-free environment and that the generated pyrolysis gas can be purged to the pyrolysis gas detection and analysis section during the subsequent pyrolysis reaction; after the reaction is completed and no more gas is generated, close the valve of gas cylinder 11 of the gas supply system 1.

[0043] S4. Set the pyrolysis temperature, heating rate and pyrolysis time, start the pyrolysis experiment, and after the pyrolysis reaction is completed, turn off the system. The cavity temperature will begin to drop and gradually reach room temperature.

[0044] S5. Record the flow meter reading and use an infrared gas analyzer 321 to analyze the pyrolysis gas composition and yield.

[0045] Optionally, the dried sludge used in the system is sludge dried through a two-stage process of "thin-layer drying + belt drying," with a sludge moisture content controlled between 10% and 30%. Before the pyrolysis reaction system 2, the dried sludge is granulated using a granulator, with particle sizes controlled to <10mm, 10-15mm, and 15-20mm. The heating rate of the tubular furnace 21 is 10℃ / min-30℃ / min, and the pyrolysis temperature is 500℃-1000℃. During the experiment, the flow meter changes are observed, and data is recorded every 5 minutes until the data no longer changes, at which point the final data is recorded. The combustible gas generated in the tubular furnace 21 reactor undergoes pretreatment through a gas pretreatment system, passing through washing, a filter membrane, and a gas-liquid separator. It then enters the infrared gas analyzer 321, where it is further treated by a filter to remove moisture, dust, tar, and other impurities, while simultaneously analyzing the combustible gas composition. CO and CH4 are measured using NDIR non-dispersive infrared spectroscopy, and H2 is measured using TCD thermal conductivity technology. Record the gas composition and yield under different influencing factors.

[0046] Example 1

[0047] The pyrolysis reaction was carried out using dried sludge with different moisture contents, and the steps are as follows:

[0048] S1. Connect the gas supply system 1, the pyrolysis reaction system 2 and the pyrolysis gas detection and analysis system 32 in sequence through gas pipes to ensure that the whole system is sealed and leak-free.

[0049] S2. Adjust the drying system parameters to control the moisture content of the dried sludge at 10%, 20%, and 30%, with a particle size of 15 mm. Then, place the dried sludge with moisture contents of 10%, 20%, and 30% evenly in the middle of the quartz tube of the tubular furnace 21, and close the reactor to ensure a sealed state.

[0050] S3. Open the valve of nitrogen cylinder 11 and introduce high-purity nitrogen into the tubular furnace 21 for 15 minutes to maintain an oxygen-free environment in the pyrolysis reaction system 2. Then turn on the switch of the tubular furnace 21 and continue to introduce nitrogen during the reaction to ensure that all the pyrolysis gas generated in the tubular furnace 21 can be purged to the pyrolysis gas detection system 3. After the reaction is completed and no more pyrolysis gas is generated, close the valve of gas cylinder 11 of the gas supply system 1.

[0051] S4. Set the heating rate of the tube furnace 21 to 10℃ / min and the temperature to 1000℃ to begin the pyrolysis experiment. After the pyrolysis reaction is complete, shut down the system, and the chamber temperature will begin to drop and gradually return to room temperature.

[0052] S5. Record the flow meter readings and use an infrared gas analyzer 321 to analyze the changes in pyrolysis gas composition and yield, and analyze the impact of sludge with different moisture contents on the production of sludge pyrolysis gas. Repeat the test for each sample to ensure the accuracy of the results.

[0053] Example 2

[0054] The pyrolysis reaction was carried out using dried sludge of different particle sizes. The specific steps differed from those in Example 1 in that:

[0055] The dried sludge (20% moisture content) was granulated using a granulator to control the particle size within three ranges: 5-10 mm, 10-15 mm, and 15-20 mm. Pyrolysis experiments were then conducted on the dried sludge of these three different particle sizes, and the changes in pyrolysis gas composition and yield were recorded.

[0056] Example 3

[0057] The pyrolysis reaction was carried out at different pyrolysis temperatures, and the specific steps differed from those in Example 1 in the following ways:

[0058] Dry sludge with a moisture content of 20% and a particle size of 10-15 mm was selected and pyrolysis experiments were conducted at different pyrolysis temperatures of 500℃, 600℃, 700℃, 800℃, 900℃ and 1000℃. The changes in pyrolysis gas composition and yield were recorded.

[0059] Example 4

[0060] The pyrolysis reaction was carried out using different heating rates in tubular furnaces 21. The specific steps differed from those in Example 1 in that:

[0061] Dry sludge with a moisture content of 20% and a particle size of 10-15 mm was selected and pyrolysis experiments were conducted under three different conditions with heating rates of 10℃ / min, 20℃ / min, and 30℃ / min. The changes in pyrolysis gas composition and yield were recorded.

[0062] Example 5

[0063] The difference from Examples 1-4 lies in the fact that pyrolysis reactions are carried out on sludge from different seasons (spring, summer, autumn, and winter), and the steps are as follows:

[0064] S1. Connect the gas supply system 1, the pyrolysis reaction system 2 and the pyrolysis gas detection and analysis system 32 in sequence through gas pipes to ensure that the whole system is sealed and leak-free.

[0065] S2. Place the dried sludge (moisture content 20%, particle size 10-15mm) from different seasons evenly in the middle of the quartz tube of the tubular furnace 21, and shut down the pyrolysis reaction system 2 to ensure a sealed state.

[0066] S3. Open the valve of nitrogen cylinder 11 and introduce high-purity nitrogen into the tubular furnace 21 for 15 minutes to maintain an oxygen-free environment in the pyrolysis reaction system 2. Then turn on the switch of the tubular furnace 21 and continue to introduce nitrogen during the reaction to ensure that the pyrolysis gas generated in the tubular furnace 21 is purged to the pyrolysis gas detection system 3. After the reaction is completed and no more gas is generated, close the valve of gas cylinder 11 of the gas supply system 1.

[0067] S4. Set the heating rate of tube furnace 21 to 10℃ / min and the temperature to 1000℃ to start the pyrolysis experiment. After the pyrolysis reaction is completed, shut down the pyrolysis reaction system 2, and the chamber temperature begins to drop and gradually returns to room temperature.

[0068] S5. Record the flow meter readings and use an infrared gas analyzer 321 to analyze the changes in pyrolysis gas composition and yield, and analyze the impact of seasonal factors on sludge pyrolysis gas. Repeat the test for each sample to ensure the accuracy of the results.

[0069] S6. During the pyrolysis process, each seasonal test is conducted in stages to prevent individual data from causing misjudgments in the overall test analysis.

[0070] Example 6

[0071] The difference between this embodiment and embodiments 1-4 is that biomass and sludge are selected for co-pyrolysis reaction, and the synergistic effect of adding different biomass on sludge pyrolysis, as well as its impact on pyrolysis gas composition and yield, are analyzed. The specific steps differ from those in embodiment 5.

[0072] Pyrolysis experiments were conducted by uniformly mixing dried sludge (20% moisture content, 10-15 mm particle size) with biomass (straw, wood, cellulose, etc.) at ratios of 2:1, 1:1, and 1:2, respectively, to analyze the changes in pyrolysis gas composition and yield. Each sample was tested repeatedly to ensure the accuracy of the results.

[0073] Example 7

[0074] The difference between this embodiment and embodiments 1-4 is that a catalyst is added during the pyrolysis process to investigate the effect of different catalyst ratios on the combustible components of sludge pyrolysis. The specific steps differ from those in embodiment 5.

[0075] Dried sludge (20% moisture content, 10-15mm particle size) was uniformly mixed with catalyst (CaO) at different addition ratios of 5%, 10%, 15%, and 20% for pyrolysis experiments. The changes in pyrolysis gas composition and yield were analyzed. Each sample was tested repeatedly to ensure the accuracy of the results.

[0076] The implementation principle of this application embodiment is as follows: the gas supply system 1 is directly connected to the gas inlet 211 of the tubular furnace 21 to ensure that the inert gas enters the reaction chamber without leakage, maintains the anaerobic pyrolysis environment, and forms a stable airflow to directionally blow the pyrolysis gas to the pyrolysis gas detection system 3, avoiding gas residue that would cause component distortion. The pyrolysis gas pretreatment system 31 purifies the pyrolysis gas containing oil / dust / water before it enters the detection and analysis system 32, effectively preventing tar condensation from clogging the sensor or droplets from interfering with the detection results, and improving the accuracy of the analysis results. The detection and analysis system 32 is directly connected to the atmosphere at the end to ensure that the system operates at normal pressure.

[0077] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sludge pyrolysis device and a pyrolysis gas component analysis system, characterized in that, include: The gas supply system (1) includes a gas cylinder (11) and a first gas outlet pipe (12) connected to the gas outlet end of the gas cylinder (11); The pyrolysis reaction system (2) includes a tubular furnace (21), which is provided with an inlet (211) and an outlet (212). A second inlet pipe (213) is connected to the inlet (211) of the tubular furnace (21), and a second outlet pipe (214) is connected to the outlet (212) of the tubular furnace (21). The first outlet pipe (12) is connected to the second inlet pipe (213). The pyrolysis gas detection system (3) includes a pyrolysis gas pretreatment system (31) and a detection and analysis system (32). The pyrolysis gas pretreatment system (31) is connected to the second gas outlet pipe (214), the pyrolysis gas pretreatment system (31) is connected to the detection and analysis system (32), and the detection and analysis system (32) is connected to the atmosphere.

2. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 1, characterized in that, The gas cylinder (11) is filled with high-purity nitrogen gas, and a sealing flange is installed at the connection between the gas cylinder (11) and the first gas outlet pipe (12).

3. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 2, characterized in that, The high-purity nitrogen gas enters the second inlet pipe (213) through the first outlet pipe (12) and purges the tubular furnace (21) through the second inlet pipe (213). The tubular furnace (21) contains a quartz tube.

4. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 1, characterized in that, The air inlet (211) of the pyrolysis gas pretreatment system (31) is connected to the second air outlet (214), and the pyrolysis gas passes through the second air outlet (214) through the washing section (311), the filter membrane section (312) and the gas-water separation section (313).

5. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 4, characterized in that, The pyrolysis gas pretreatment system (31) includes a flow regulation unit, a pressure regulation unit, a temperature regulation unit, a dust removal unit, a water removal unit, and an oil removal unit connected in sequence. The pyrolysis gas after being treated by the pyrolysis gas pretreatment system (31) enters the detection and analysis system (32).

6. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 5, characterized in that, The gas flow rate of the pyrolysis gas entering the detection and analysis system (32) is 0.7-1.2 L / min, and the gas pressure entering the detection and analysis system (32) does not exceed 50 kp.

7. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 1, characterized in that, The detection and analysis system (32) includes an infrared gas analyzer (321), a gas inlet (322) installed on the infrared gas analyzer (321), a gas outlet, a flow meter, and a filter installed on the infrared gas analyzer (321).

8. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 7, characterized in that, The detection and analysis system (32) analyzes the yield of CO, H2 and CH4 combustible gases in the pyrolysis gas. A third gas outlet pipe is connected to the gas outlet and the third gas outlet pipe is connected to the atmosphere.

9. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 1, characterized in that, The sludge processed in the pyrolysis reaction system (2) needs to be granulated by a granulator. The sludge used for granulation has a water content of 10%-30%.

10. The sludge pyrolysis device and pyrolysis gas component analysis system according to claim 9, characterized in that, The sludge particles granulated by the granulator have a particle size of less than 10mm, 10-15mm, or 15-20mm.

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