Leakage-proof spray condensation device capable of replacing spray head on line

Abstract

The invention discloses an anti-leakage spray condensation device with a nozzle capable of being replaced on line. The anti-leakage spray condensation device comprises an upper rapid switching blind plate valve, a lower rapid switching blind plate valve, an annular nitrogen injection port, a detachable nozzle, a nitrogen injection port at the blind plate valve and a labyrinth sealing pipe. The detachable nozzle is inserted into the labyrinth sealing pipe in a sleeve mode, and the insertion end is connected through a flange. According to the anti-leakage spray condensation device capable of replacing the spray head online, on the premise that safety is guaranteed, rapid and online replacement of the spray head can be achieved, and the maintenance cost and the risk of production interruption are greatly reduced. Through the design of the two-stage quick switching blind plate valve, the sealing performance of a pipeline system in the replacement process is ensured; the nitrogen injection device provides necessary safety guarantee; and due to the design of the detachable spray head, the maintenance convenience is improved. By implementing the technical scheme, the safety and economical efficiency of pyrolysis gas treatment can be remarkably improved.

Description

Technical Field

[0001] The invention relates to a leak-proof and online replaceable nozzle spray condensation device, which is used for online replacement of nozzles spraying with organic solid waste pyrolysis gas, and belongs to the technical field of harmless treatment and resource utilization of organic waste. Background Art

[0002] Pyrolysis of organic solid waste is the process of converting solid waste into valuable products such as pyrolysis gas, pyrolysis oil and pyrolysis carbon at high temperature under oxygen-free or low-oxygen conditions. As a byproduct, pyrolysis gas contains usable chemical energy, but its treatment process is complicated, and the pyrolysis gas contains a large amount of dust and particulate matter, which needs to be purified by spray washing. The spray system plays a vital role in the pyrolysis process. It washes the pyrolysis gas by spraying washing oil through the nozzle to improve the purity of the pyrolysis gas. However, due to the small aperture of the nozzle, after long-term operation, the dust and particulate matter in the pyrolysis oil and gas are easy to accumulate at the nozzle, causing the nozzle to be blocked, thereby affecting the atomization effect of the spray. This blockage not only reduces the spray efficiency, but may also cause abnormal pressure in the spray system and increase the risk of equipment failure.

[0003] As a high-temperature, toxic, flammable and explosive gas, the characteristics of pyrolysis gas make the maintenance and replacement of nozzles challenging. Pyrolysis gas must be strictly controlled during the treatment process to prevent potential safety accidents. The traditional method of replacing nozzles requires opening the system, which not only causes air to enter and increases the risk of explosion, but also may release toxic gases, posing a threat to the environment and operators. In addition, replacing nozzles usually requires stopping production, which not only affects production efficiency but also causes economic losses. In some continuous production processes, stopping production to replace nozzles may cause the entire production line to stagnate, resulting in huge economic losses and waste of resources. Therefore, the existing sprinkler system has obvious deficiencies in nozzle maintenance and replacement, and there is an urgent need for a device that can replace nozzles without interrupting equipment operation. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art and to provide a leak-proof spray condensation device with a nozzle that can be replaced online, which can replace the nozzle online while preventing the leakage of pyrolysis gas.

[0005] The technical solution of the present invention is:

[0006] A leak-proof and online replaceable nozzle spraying device, comprising: an upper quick-switching blind plate valve, a lower quick-switching blind plate valve, an annular nitrogen blowing port, a detachable nozzle, a nitrogen blowing port at the blind plate valve, and a comb tooth sealing pipe;

[0007] The detachable nozzle is inserted into the grate sealing tube in the form of a sleeve, and the insertion end is connected by a flange. The upper quick-switch blind plate valve, the lower quick-switch blind plate valve and the grate sealing tube are connected by a flange.

[0008] The annular nitrogen blowing port is arranged between the upper quick-switching blind valve and the lower quick-switching blind valve, and the nitrogen blowing port at the blind valve is arranged at the upper quick-switching blind valve and the lower quick-switching blind valve, which is used for blowing between the two-stage blind valves and at the blind valves to intercept the escaped pyrolysis gas to ensure an oxygen-free or oxygen-deficient environment of the system.

[0009] Furthermore, the upper quick-switching blind plate valve and the lower quick-switching blind plate valve have the same structural composition, both comprising: a blind plate of a blind plate valve, a through hole of a blind plate valve, a pull rod of a blind plate valve, an upper flange of a blind plate valve, and a lower flange of a blind plate valve;

[0010] Under normal operating conditions, the blind valve through holes on the blind plates of the upper quick-switching blind valve and the lower quick-switching blind valve are fitted with the detachable nozzle and the grate seal tube, and the valve is in an open state;

[0011] When the detachable nozzle needs to be replaced, the flat end of the blind plate is moved to the comb tooth sealing tube by pulling the blind plate valve rod to achieve a closed state, thereby cutting off the connecting pipe of the detachable nozzle to ensure that no air enters during the replacement process.

[0012] The upper flange of the blind plate valve and the lower flange of the blind plate valve are respectively used for connecting the upper quick-switching blind plate valve and the lower quick-switching blind plate valve with the comb tooth sealing pipe.

[0013] Furthermore, an annular groove is provided at the edge of the intercepting area of ​​the blind plate valve, the width of the annular groove is 1 to 3 mm, an annular sealing gasket is provided in the annular groove, and the sealing gasket is made of PTFE high temperature resistant material.

[0014] Furthermore, when the pyrolysis gas spray washing is operating normally, the upper quick-switching blind plate valve and the lower quick-switching blind plate valve are opened, the blind plate valve is switched to the blind plate valve through hole, the detachable nozzle is inserted through the grate sealing tube, and is connected through the nozzle flange, the nozzle flange gasket, and the grate sealing tube flange. The end of the detachable nozzle is flush with the bottom flange of the lower quick-switching blind plate valve, and the washing oil is sprayed in an atomized form through the detachable nozzle.

[0015] Furthermore, 6 annular nitrogen injection ports are arranged between the upper and lower quick-switching blind plate valves, and 3 blind plate valve nitrogen injection ports are arranged at each of the two quick-switching blind plate valves. A nitrogen pressure monitoring system is arranged before the annular nitrogen injection ports and the blind plate valve nitrogen injection ports, so that the nitrogen pressure is 0.1 kPa to 0.2 kPa higher than the pressure in the condensation device.

[0016] Furthermore, the comb teeth sealing tube is provided with a comb teeth seal at the tube wall where the detachable nozzle is inserted, and at the connection between the comb teeth sealing tube and the end of the detachable nozzle.

[0017] Furthermore, the comb seal has a shape of semicircular, rectangular, triangular or brush-type structure.

[0018] Furthermore, the detachable nozzle is connected to the comb teeth sealing tube by bolts, so that the detachable nozzle can be quickly replaced.

[0019] Furthermore, when the detachable nozzle needs to be replaced, the nitrogen blowing port of the blind plate valve is opened, and the annular nitrogen blowing port is opened at the same time for purging;

[0020] Loosen the nozzle flange and the grate sealing tube flange between the detachable nozzle and the grate sealing tube, pull the detachable nozzle to the bottom of the upper quick-switch blind plate valve, close the lower quick-switch blind plate valve, push the blind plate of the lower quick-switch blind plate valve to the valve body, and the grate seal set on the inner wall of the grate sealing tube realizes sealing;

[0021] Continue to pull out the detachable nozzle and replace it with a new one; insert the new detachable nozzle into the upper quick-switch blind plate valve;

[0022] Open the lower quick-switch blind plate valve again, switch the blind plate valve through hole of the lower quick-switch blind plate valve to the valve body, continue to insert the new detachable nozzle, align the end of the new detachable nozzle with the end of the lower quick-switch blind plate valve, restore the nozzle flange connection, and complete the replacement.

[0023] The beneficial effects of the present invention compared with the prior art are:

[0024] The online replacement nozzle condensation device implemented according to the present invention can be used for online replacement of pyrolysis gas spray nozzles. The significant effects of the present invention are:

[0025] (1) The device proposed in the present invention can be used to perform the following consecutive actions: pulling out the old nozzle - replacing the old nozzle with a new one - pushing in the new nozzle. The actions can be easily completed within a few minutes, and the replacement cycle is short, thereby ensuring that the performance indicators of the nozzle are always in good condition, thereby improving the continuity of the pyrolysis process and the continuity of the pyrolysis products.

[0026] (2) Annular nitrogen injection can improve the sealing effect, prevent pyrolysis leakage, and prevent air from entering the pyrolysis system to increase the oxygen content, thereby preventing the occurrence of risks such as fire and explosion, and providing safety for the overall system.

[0027] (3) A comb seal is provided on the inner wall of the tube at the end of the nozzle, which can improve the sealing effect of the device and reduce the risk of pyrolysis gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of a leak-proof spray condensation device with online replaceable nozzles according to the present invention;

[0029] Figure 2 This is a schematic diagram of a blind plate valve;

[0030] Figure 3 It is a schematic diagram of the comb teeth sealing tube;

[0031] Among them, 1-upper quick-switching blind valve, 2-lower quick-switching blind valve, 3-nitrogen ring injection port, 4-nozzle, 5-nitrogen injection port, 6-comb tooth sealing tube, 101-blind plate of blind valve, 102-blind plate valve through hole, 103-blind plate valve pull rod, 104-blind plate valve upper flange, 105-blind plate valve lower flange, 106-packing seal, 107-annular groove, 401-nozzle connecting flange, 402-nozzle connecting gasket, 601-brush seal, 602-comb tooth seal, 603-comb tooth sealing pipe flange. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the present invention proposes a leak-proof and online replaceable nozzle spray condensation device, comprising: an upper fast-switching blind plate valve 1, a lower fast-switching blind plate valve 2, an annular nitrogen blowing port 3, a detachable nozzle 4, a nitrogen blowing port 5 at the blind plate valve, and a comb tooth sealing tube 6;

[0034] The detachable nozzle 4 is inserted into the comb teeth sealing tube 6 in the form of a sleeve, and the insertion end is connected by a flange, and the upper quick-switching blind plate valve 1 and the lower quick-switching blind plate valve 2 are connected to the comb teeth sealing tube by a flange;

[0035] The annular nitrogen blowing port 3 is arranged between the upper fast switching blind valve 1 and the lower fast switching blind valve 2, and the nitrogen blowing port 5 at the blind valve is arranged at the upper fast switching blind valve 1 and the lower fast switching blind valve 2, which is used for purging between the two-stage blind valves and at the blind valves to intercept the escaped pyrolysis gas to ensure an oxygen-free or oxygen-deficient environment of the system.

[0036] like Figure 1 and Figure 2 As shown, the upper quick-switching blind plate valve 1 and the lower quick-switching blind plate valve 2 have the same structure and composition, both of which include: a blind plate 101 of a blind plate valve, a blind plate valve through hole 102, a blind plate valve pull rod 103, an upper flange 104 of a blind plate valve, and a lower flange 105 of a blind plate valve;

[0037] Under normal operating conditions, the blind valve through hole 102 on the blind valve blind plate 101 of the upper quick-switching blind valve 1 and the lower quick-switching blind valve 2 is sleeved with the detachable nozzle 4 and the grate seal tube 6, and the valve is in an open state;

[0038] When the detachable nozzle 4 needs to be replaced, the flat end of the blind plate 101 is moved onto the comb teeth sealing tube 6 by pulling the blind plate valve rod 103 to achieve a closed state, thereby cutting off the connecting pipe of the detachable nozzle 4 to ensure that no air enters during the replacement process.

[0039] The blind plate valve upper flange 104 and the blind plate valve lower flange 105 are used for connecting the upper quick-switching blind plate valve 1 and the lower quick-switching blind plate valve 2 to the comb teeth sealing pipe 6 respectively.

[0040] like Figure 2 As shown, an annular groove 107 is provided at the edge of the intercepting area of ​​the blind plate valve, the width of the annular groove is 1 to 3 mm, and an annular sealing gasket is arranged in the annular groove, and the sealing gasket is made of PTFE high temperature resistant material.

[0041] When the pyrolysis gas spray washing is operating normally, the upper quick-switching blind valve 1 and the lower quick-switching blind valve 2 are opened, the blind valve is switched to the blind valve through hole 102, the detachable nozzle 4 is inserted through the grate sealing tube 6, and is connected through the nozzle flange 401, the nozzle flange gasket 402, and the grate sealing tube flange 603. The end of the detachable nozzle 4 is flush with the bottom flange of the lower quick-switching blind valve 2, and the washing oil is sprayed in an atomized manner through the detachable nozzle 4.

[0042] Six annular nitrogen injection ports 3 are arranged between the upper and lower quick-switching blind plate valves, and three blind plate valve nitrogen injection ports 5 are arranged at each of the two quick-switching blind plate valves. A nitrogen pressure monitoring system is arranged before the annular nitrogen injection ports 3 and the blind plate valve nitrogen injection ports 5, so that the nitrogen pressure is 0.1 kPa to 0.2 kPa higher than the pressure in the condensation device.

[0043] The grate seal tube 6 is provided with a grate seal at the tube wall where the detachable nozzle 4 is inserted, and at the connection between the grate seal tube 6 and the end of the detachable nozzle 4. The grate seal is in the shape of a semicircular, rectangular, triangular or brush-type structure.

[0044] The detachable spray head 4 is connected to the comb teeth sealing tube 6 by bolts, so that the detachable spray head 4 can be quickly replaced.

[0045] Example:

[0046] This embodiment provides a leak-proof and online replaceable nozzle condensation spraying device, which can realize online replacement of the nozzle.

[0047] The structure of the condensation spraying device is composed of an upper fast-switching blind plate valve 1, a lower fast-switching blind plate valve 2, a nitrogen blowing device 3, a detachable nozzle 4, a nitrogen blowing port 5, and a grate tooth sealing tube 6.

[0048] The upper quick-switch blind plate valve 1 and the lower quick-switch blind plate valve 2 are the core components for realizing online replacement of the nozzles, and are made of high-temperature resistant materials, such as 310S, 304 stainless steel, etc. An annular groove 107 is provided at the edge of the interception area of ​​the blind plate valve, and the width of the annular groove is 1 to 3 mm. An annular sealing gasket is provided in the annular groove, and the sealing gasket is made of high-temperature resistant materials such as PTFE.

[0049] The quick-switching blind plate valves 1 and 2 are composed of a blind plate 101, a blind plate through hole 102, a blind plate valve pull rod 103, an upper blind plate flange 104, and a lower blind plate flange 105, which can realize fast and safe switching operations without interrupting the pipeline system. Under normal operating conditions, the through hole 102 on the blind plate of the upper quick-switching blind plate valve 1 and the lower quick-switching blind plate valve 2 fits together with the nozzle 4 and the comb-teeth sealing tube 6, and the valve is in an open state. When the nozzle 4 needs to be replaced, the flat end of the blind plate 101 is moved to the comb-teeth sealing tube 6 by pulling the blind plate valve pull rod 103 to achieve a closed state, thereby cutting off the nozzle 4 connection pipe to ensure that no air enters during the replacement process.

[0050] When the pyrolysis gas spray washing is operating normally, the upper quick-switching blind valve 1 and the lower quick-switching blind valve 2 are opened, the blind valve is switched to the blind valve through hole 102, the nozzle 4 is inserted through the grate sealing tube 6, and is connected through the nozzle flange 401, the nozzle flange gasket 402, and the grate sealing tube flange 603. The end of the nozzle 4 is flush with the bottom flange of the lower quick-switching blind valve 2, and the washing oil is sprayed in an atomized manner through the nozzle 4.

[0051] This embodiment is also provided with a nitrogen blowing system, including 6 annular nitrogen blowing ports 3 between the upper and lower fast switching blind valves, and 3 nitrogen blowing ports 5 at the two fast switching blind valves, which are used for blowing between the two-stage blind valves and at the blind valves to intercept the escaped pyrolysis gas to ensure an oxygen-free or oxygen-deficient environment for the system. A nitrogen pressure monitoring system is provided in front of the nitrogen blowing port to make the nitrogen pressure 0.1 kPa to 0.2 kPa higher than the pressure in the system.

[0052] The structural design of the detachable spray head takes into account the requirements of rapid installation and disassembly, and is connected to the comb teeth sealing tube by bolts, so that the spray head can be quickly replaced without using special tools.

[0053] When the spray system has been running for a long time, the pyrolysis gas contains a lot of dust, and the accumulated dust causes clogging of the nozzle 4, so the nozzle 4 needs to be replaced. When replacing the detachable nozzle 4, open the nitrogen blowing port 5 of the blind plate valve, and open the annular nitrogen blowing port 3 for purging; loosen the nozzle flange 401 and the grate sealing tube flange 603 between the detachable nozzle 4 and the grate sealing tube 6, pull the detachable nozzle 4 to the bottom of the upper fast switching blind plate valve 1, close the lower fast switching blind plate valve 2, push the blind plate 101 of the lower fast switching blind plate valve 2 to the valve body, and the grate seal set on the inner wall of the grate sealing tube 6 realizes sealing, such as Figure 3 As shown, such as 602A rectangle or 602B semicircle or 602C triangle, the sealing effect can be improved; continue to pull out the detachable nozzle 4 and replace it with a new detachable nozzle 4; insert the new detachable nozzle 4 into the upper quick-switching blind plate valve 1; open the lower quick-switching blind plate valve 2 again, so that the blind plate valve through hole 102 of the lower quick-switching blind plate valve 2 is switched to the valve body, and continue to insert the new detachable nozzle 4, so that the end of the new detachable nozzle 4 is aligned with the end of the lower quick-switching blind plate valve 2, and the nozzle flange connection is restored to complete the replacement.

[0054] In summary of the above technical solutions, the leak-proof online replaceable nozzle spray condensation device of the present invention can realize the rapid online replacement of the nozzle while ensuring safety, greatly reducing the maintenance cost and the risk of production interruption. The design of the two-stage rapid switching blind plate valve ensures the sealing of the pipeline system during the replacement process; the nitrogen blowing device provides the necessary safety guarantee; and the design of the detachable nozzle improves the convenience of maintenance. The implementation of this technical solution will significantly improve the safety and economy of pyrolysis gas treatment.

[0055] Parts of the present invention that are not described in detail belong to common knowledge among those skilled in the art.

Claims

1. A leak-proof spray condensation device with replaceable nozzles online, characterized in that include: An upper quick-switching blind plate valve (1), a lower quick-switching blind plate valve (2), an annular nitrogen injection port (3), a detachable nozzle (4), a nitrogen injection port at the blind plate valve (5) and a grate tooth sealing tube (6); The detachable nozzle (4) is inserted into the comb tooth sealing tube (6) in the form of a sleeve, and the insertion end is connected by a flange, and the upper quick-switching blind plate valve (1), the lower quick-switching blind plate valve (2) and the comb tooth sealing tube are connected by a flange; The annular nitrogen blowing port (3) is arranged between the upper fast switching blind plate valve (1) and the lower fast switching blind plate valve (2), and the nitrogen blowing port (5) at the blind plate valve is arranged at the upper fast switching blind plate valve (1) and the lower fast switching blind plate valve (2), and is used for blowing between the two-stage blind plate valves and at the blind plate valves to intercept the escaped pyrolysis gas, so as to ensure an oxygen-free or oxygen-deficient environment of the system.

2. The leak-proof spraying device with online replaceable nozzle according to claim 1, characterized in that: The upper quick-switching blind plate valve (1) and the lower quick-switching blind plate valve (2) have the same structural composition, and both comprise: a blind plate of a blind plate valve (101), a blind plate valve through hole (102), a blind plate valve tie rod (103), an upper flange of a blind plate valve (104), and a lower flange of a blind plate valve (105); In a normal operating state, the blind plate valve through hole (102) on the blind plate valve blind plate (101) of the upper quick-switching blind plate valve (1) and the lower quick-switching blind plate valve (2) is sleeved together with the detachable spray head (4) and the comb tooth sealing tube (6), and the valve is in an open state; When the detachable nozzle (4) needs to be replaced, the flat plate end of the blind plate (101) is moved onto the comb teeth sealing tube (6) by pulling the blind plate valve pull rod (103) to achieve a closed state, thereby cutting off the connecting pipe of the detachable nozzle (4) to ensure that no air will enter during the replacement process. The blind plate valve upper flange (104) and the blind plate valve lower flange (105) are used to connect the upper quick-switching blind plate valve (1) and the lower quick-switching blind plate valve (2) to the comb teeth sealing pipe (6), respectively.

3. The leak-proof spraying device with online replaceable nozzle according to claim 2, characterized in that: An annular groove (107) is provided at the edge of the intercepting area of ​​the blind plate valve. The width of the annular groove is 1 to 3 mm. An annular sealing gasket is arranged in the annular groove. The sealing gasket is made of PTFE high temperature resistant material.

4. The leak-proof spraying device with online replaceable nozzle according to claim 2, characterized in that: When the pyrolysis gas spray washing is in normal operation, the upper quick-switching blind plate valve (1) and the lower quick-switching blind plate valve (2) are opened, the blind plate valve is switched to the blind plate valve through hole (102), the detachable nozzle (4) is inserted through the grate tooth sealing tube (6), and connected through the nozzle flange (401), the nozzle flange gasket (402), and the grate tooth sealing tube flange (603), the end of the detachable nozzle (4) is flush with the bottom flange of the lower quick-switching blind plate valve (2), and the washing oil is sprayed by atomization through the detachable nozzle (4).

5. The leak-proof spraying device with online replaceable nozzle according to claim 2, characterized in that: Six annular nitrogen injection ports (3) are arranged between the upper and lower quick-switching blind plate valves, three blind plate valve nitrogen injection ports (5) are arranged at each of the two quick-switching blind plate valves, and a nitrogen pressure monitoring system is arranged before the annular nitrogen injection ports (3) and the blind plate valve nitrogen injection ports (5), so that the nitrogen pressure is 0.1 kPa to 0.2 kPa higher than the pressure in the spray condensation device.

6. The leak-proof spraying device with online replaceable nozzles according to claim 2, characterized in that: The grate seal tube (6) is provided with a grate seal at the tube wall where the detachable nozzle (4) is inserted, and at the connection between the grate seal tube (6) and the end of the detachable nozzle (4).

7. The leak-proof spraying device with online replaceable nozzle according to claim 6, characterized in that: The shape of the comb seal is semicircular, rectangular, triangular or brush-type structure.

8. The leak-proof spraying device with online replaceable nozzle according to claim 6, characterized in that: The detachable spray head (4) is connected to the comb teeth sealing tube (6) via bolts, so that the detachable spray head (4) can be quickly replaced.

9. The leak-proof spraying device with online replaceable nozzle according to claim 4, characterized in that: When the detachable nozzle (4) needs to be replaced, the nitrogen blowing port (5) of the blind plate valve is opened, and at the same time, the annular nitrogen blowing port (3) is opened for purging; The nozzle flange (401) and the grate sealing tube flange (603) between the detachable nozzle (4) and the grate sealing tube (6) are loosened, and the detachable nozzle (4) is pulled to the bottom of the upper quick-switching blind plate valve (1), and the lower quick-switching blind plate valve (2) is closed, so that the blind plate (101) of the lower quick-switching blind plate valve (2) is pushed to the valve body, and the grate seal provided on the inner wall of the grate sealing tube (6) realizes sealing; Continue to pull out the detachable spray head (4) and replace it with a new detachable spray head (4); insert the new detachable spray head (4) into the upper quick-switch blind plate valve (1); Open the lower quick-switch blind plate valve (2) again, so that the blind plate valve through hole (102) of the lower quick-switch blind plate valve (2) is switched to the valve body, and the new detachable nozzle (4) is inserted, so that the end of the new detachable nozzle (4) is aligned with the end of the lower quick-switch blind plate valve (2), and the nozzle flange connection is restored to complete the replacement.

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