Waste salt treatment type pyrolysis device with coke treatment function and working method thereof

Abstract

The present application discloses a waste salt processing type pyrolysis device with a coke processing function, the waste salt processing type pyrolysis device with a coke processing function comprises a rotary kiln, a coke processing mechanism and a combustible flue gas processing mechanism, the waste salt processing type pyrolysis device with a coke processing function pyrolyzes waste salt and pyrolyzes organic matter in the waste salt into combustible gas and solid organic carbon to form ash, uses the heat of the secondary combustion of the combustible gas to preheat air, thereby providing preheated air for subsequent fuel combustion to generate high-temperature flue gas and ultra-high temperature superheated steam, thereby increasing the utilization rate of industrial waste salt, and avoiding direct emission of combustible flue gas to pollute the environment, the overall operation is more energy-saving and environmentally friendly, and the coke generated by the pyrolysis of the waste salt is automatically scraped off and ultra-high temperature superheated steam is used to prevent the waste salt from coking, thereby realizing cleaning and prevention in one, compared with the existing rotary kiln device, the waste salt pyrolysis operation can be smoothly performed, so that the waste salt can be efficiently pyrolyzed.

Description

Technical Field

[0001] The invention relates to the technical field of waste salt treatment devices, and in particular to a waste salt treatment type pyrolysis device with a coke treatment function and a working method thereof. Background Art

[0002] Waste salt is a solid waste with inorganic salt as the main component, which is produced in the process of high-salt wastewater treatment and pesticide production. Waste salt contains a variety of toxic impurities. If it is not handled properly, it will not only harm human health, but also pollute the environment and destroy the agricultural ecological environment. Therefore, the waste salt is usually treated by pyrolysis in a rotary kiln to make it harmless.

[0003] In actual operation, the long-chain organic matter and aromatic, condensed and heterocyclic organic matter in the waste salt often undergo polymerization under high temperature conditions to form coke blocks that adhere to the inner wall of the rotary kiln. As the coke blocks continue to adhere to the inner wall of the rotary kiln, the difficulty of the waste salt circulating in the rotary kiln gradually increases, which prolongs the pyrolysis cycle of the waste salt in the rotary kiln. At the same time, local coking will also produce local high temperatures, causing the waste salt to melt and reduce the waste salt treatment efficiency. In addition, this will gradually reduce the loading capacity of the rotary kiln for waste salt and reduce the production capacity of the rotary kiln.

[0004] When dealing with the coking problem, the existing rotary kiln uses mechanical claws to grab the inner wall of the kiln to remove the coke blocks. However, since the coke blocks near the wall of the rotary kiln are harder than those far from the wall and have greater adhesion to the wall, the coke blocks cannot be completely removed with only mechanical claws.

[0005] In addition, when the existing rotary kiln device is in use, the organic matter in the waste salt in the rotary kiln is pyrolyzed to obtain combustible flue gas, and then the flue gas treatment equipment performs harmless treatment on the combustible flue gas and discharges it in the form of waste gas and wastewater. Since the combustible flue gas carries a certain amount of heat and can release a large amount of heat after combustion, the waste gas generated after treatment has a higher temperature, and this part of the heat cannot be used, which will cause a certain degree of energy waste. In addition, when the waste salt in the rotary kiln is pyrolyzed, the rotary kiln needs to maintain a high temperature for a long time, which requires continuous supply of energy from the outside, resulting in high production costs. Summary of the invention

[0006] One advantage of the present invention is that it provides a waste salt processing type pyrolysis device with the function of processing coke blocks and a working method thereof. The present invention can pyrolyze waste salt and pyrolyze organic matter in the waste salt into combustible gas and solid organic carbon and form ash, and use the heat from the secondary combustion of the combustible gas to preheat the air, thereby providing preheated air for subsequent fuel combustion to generate high-temperature flue gas and ultra-high temperature superheated steam, thereby increasing the utilization rate of industrial waste salt and avoiding direct emission of combustible flue gas to pollute the environment. The overall operation is more energy-saving and environmentally friendly, and the coke blocks generated by the pyrolysis of the waste salt are automatically scraped off and ultra-high temperature superheated steam is used to prevent the waste salt from coking, thereby realizing cleaning and prevention in one. Compared with the existing rotary kiln device, the waste salt pyrolysis operation can be smoothly performed, so that the waste salt can be efficiently pyrolyzed.

[0007] One advantage of the present invention is that it provides a waste salt processing type pyrolysis device with the function of processing coke blocks and its working method. The present invention can cool and wash the high-temperature flue gas generated after the preheating air operation is completed, so that the high-temperature flue gas can be discharged in the form of wastewater and waste gas that meet the emission requirements, avoiding direct emission of high-temperature flue gas to pollute the environment.

[0008] In order to achieve at least one of the above advantages of the present invention, the present invention provides a waste salt processing type pyrolysis device with a coke processing function, which is used to pyrolyze waste salt, remove coke generated by the pyrolysis of the waste salt and prevent coking, and recycle the combustible flue gas generated by the pyrolysis of organic matter in the waste salt. The waste salt processing type pyrolysis device with a coke processing function includes:

[0009] A pyrolysis kiln, the pyrolysis kiln comprising a kiln body, the kiln body comprising a kiln head, a kiln tail and a pyrolysis chamber extending between the kiln head and the kiln tail, the kiln head, the kiln tail and the pyrolysis chamber forming a pyrolysis chamber, the kiln body further comprising a gas outlet communicating with the pyrolysis chamber, the gas outlet being used to discharge combustible fumes generated after pyrolysis of the waste salt;

[0010] A coke block processing mechanism, the coke block processing mechanism comprises a connecting shaft and a plurality of coke block processing components, the connecting shaft is installed on the kiln body, the connecting shaft has a gas delivery channel and an inlet connected to the gas delivery channel, the coke block processing components comprise a scraper and an injection component, the injection component has a communication channel and at least one injection port connected to the communication channel, the communication channel is connected to the gas delivery channel, the injection port is connected to the pyrolysis chamber, the injection component is installed on the connecting shaft, the injection component is used to spray high-temperature flue gas and ultra-high-temperature superheated steam into the pyrolysis chamber, the scraper is connected to the connecting shaft, and there is a gap between the scraper and the inner wall of the pyrolysis chamber, the pyrolysis chamber and the connecting shaft rotate relative to each other so that the scraper scrapes the coke blocks on the inner wall of the pyrolysis chamber;

[0011] A combustible smoke treatment mechanism, the combustible smoke treatment mechanism comprising:

[0012] A thermal oxidation furnace, the thermal oxidation furnace having a first air intake port and a first air exhaust port, the first air intake port being connected to the gas outlet through a pipeline so that the combustible flue gas in the kiln body can be introduced into the thermal oxidation furnace, the thermal oxidation furnace is used to burn the combustible flue gas discharged from the kiln body to fully burn the light hydrocarbons and other combustible gases in the combustible flue gas, and the first exhaust port is used to exhaust the harmless gas generated by the combustion of the combustible flue gas in the thermal oxidation furnace;

[0013] An air preheater, the air preheater having a second air intake port, a second air exhaust port, an air inlet port and an air discharge port, the second air intake port is connected with the first air discharge port so that the harmless gas discharged from the thermal oxidizer is introduced into the air preheater, the air inlet port is used to absorb outside air, the air inlet port is connected with the air discharge port through a first flow channel of the air preheater, the second air intake port is connected with the second air discharge port through a second flow channel of the air preheater, the first flow channel and the second flow channel are sleeved, the air preheater is configured to exchange the heat of the harmless gas introduced from the thermal oxidizer with the air entering from the air inlet port, and the second air discharge port is used to discharge the smoke after the heat exchange;

[0014] A hot blast furnace, the hot blast furnace has a fourth air intake port and a fourth air exhaust port, the fourth air intake port is connected with the air exhaust port so that the air preheater can supply preheated air to the hot blast furnace, the hot blast furnace is used to burn fuel, so that the fuel burns to generate high-temperature flue gas and ultra-high-temperature superheated steam under the auxiliary action of atomized process water and preheated air, and the fourth exhaust port is connected with the inlet port to introduce high-temperature flue gas and ultra-high-temperature superheated steam into the gas transmission channel.

[0015] According to one embodiment of the present invention, the kiln body further has a feed inlet and a solid material outlet connected to the pyrolysis chamber, the solid material outlet is formed at the kiln tail, the gas material outlet is formed at the kiln head, the kiln body has a high end and a low end, the solid material outlet is used to discharge the solid matter generated after the pyrolysis of the waste salt, the kiln head is arranged at the high end, the kiln tail is arranged at the low end, and the kiln body is inclined at a predetermined angle to guide the waste salt in the pyrolysis chamber to move from the high end to the kiln tail at the low end.

[0016] According to one embodiment of the present invention, the jet component is installed between the connecting shaft and the scraper component, and one end of the jet component away from the connecting shaft is bent toward the inner wall of the pyrolysis chamber and extends toward the solid material outlet, and the jet port faces the inner wall of the pyrolysis chamber, and the side of the scraper component away from the connecting shaft is parallel to the axial direction of the pyrolysis chamber and extends toward the solid material outlet, and the extension direction of the scraper component is parallel to the extension direction of the pyrolysis chamber, so that the scraper component can remove the coke blocks while pushing the waste salt toward the solid material outlet.

[0017] According to one embodiment of the present invention, the kiln body further has a cleaning port, which is formed at the kiln head. The cleaning port is used to collect the waste salt that enters the kiln head from the feed port but does not enter the pyrolysis chamber and the solid matter that is driven by the combustible flue gas to flow to the gas outlet and is blocked by the inner wall of the kiln head and falls. The pyrolysis kiln also includes at least two first seals, and the two first seals are respectively installed at the kiln head and the kiln tail.

[0018] According to one embodiment of the present invention, the thermal oxidation furnace also has an air supply port for providing preheated air to the combustion of combustible flue gas in the thermal oxidation furnace, the air outlet is connected to the air supply port through a pipeline, and the air preheater is configured to introduce preheated air into the thermal oxidation furnace.

[0019] According to one embodiment of the present invention, the combustible smoke treatment mechanism also includes a blower, the blower has a third air intake port and a third air exhaust port, the third air intake port is connected to the outside, the third air intake port is used to absorb outside air, the thermal oxidation furnace has a first cooling air port, the hot air furnace also has a second cooling air port, the third exhaust port is connected to the first cooling air port, the air inlet, and the second cooling air port through a pipeline, and the blower is configured to introduce outside air into the air preheater, the thermal oxidation furnace and the hot air furnace.

[0020] According to one embodiment of the present invention, the combustible flue gas treatment mechanism also includes a alkali washing tower, which has a fifth air intake and a fifth exhaust port. The fifth air intake is connected to the second exhaust port through a pipeline so that the air preheater can discharge the cooled flue gas to the alkali washing tower. The alkali washing tower is configured to purify the flue gas and discharge it in the form of wastewater and waste gas, and the fifth exhaust port is used to discharge the waste gas generated by the purification of the alkali washing tower.

[0021] According to one embodiment of the present invention, the combustible smoke treatment mechanism also includes an induced draft fan, which has a sixth air intake port and a sixth air exhaust port, and the sixth air intake port is connected to the fifth exhaust port through a pipeline. The induced draft fan is configured to transfer the waste gas in the alkali washing tower and discharge it through the sixth exhaust port. The combustible smoke treatment mechanism also includes a chimney, which has a seventh air intake port and a seventh exhaust port, and the seventh air intake port is connected to the sixth exhaust port. The induced draft fan is configured to introduce the waste gas in the alkali washing tower into the chimney, and the seventh exhaust port is connected to the outside for discharging the waste gas.

[0022] In order to achieve at least one of the above advantages of the present invention, the present invention provides a working method of a waste salt treatment type pyrolysis device having a coke processing function, and the working method of the waste salt treatment type pyrolysis device having a coke processing function comprises the following steps:

[0023] (A) high-temperature flue gas and ultra-high-temperature superheated steam are introduced into the communicating channel from the gas transmission channel and discharged into the pyrolysis chamber from the gas jet port, thereby providing a pyrolysis environment for the waste salt in the pyrolysis chamber and preventing coking of the inner wall of the pyrolysis chamber;

[0024] (B) the pyrolysis chamber and the connecting shaft rotate relative to each other so that the scraping member located in the pyrolysis chamber scrapes off the coke blocks generated by the pyrolysis of the waste salt on the inner wall of the pyrolysis chamber;

[0025] (C) The combustible flue gas generated by the pyrolysis of organic matter in the waste salt is discharged from the gas outlet and enters the thermal oxidation furnace. The combustible flue gas is burned in the thermal oxidation furnace to decompose into harmless gas and introduced into the air preheater. The air preheater exchanges the heat of the harmless gas with the air. The preheated air is introduced into the hot blast furnace. The fuel in the hot blast furnace burns with the assistance of the preheated air and atomized process water to generate high-temperature flue gas and ultra-high-temperature superheated steam. The high-temperature flue gas and ultra-high-temperature superheated steam are introduced into the gas transmission channel to provide a pyrolysis environment for the waste salt in the pyrolysis chamber and provide purge gas for the jet element.

[0026] According to one embodiment of the present invention, the working method of the waste salt treatment type pyrolysis device having the function of processing coke blocks comprises the following steps:

[0027] (a) the blower absorbs outside air and introduces the outside air into the air preheater so that the air preheater performs air preheating operation, and the blower introduces outside air into the thermal oxidation furnace to provide combustion support for the combustion of combustible gas in the thermal oxidation furnace, and at the same time, the blower introduces outside air into the hot blast furnace to provide combustion support for the combustion of fuel in the hot blast furnace;

[0028] (b) partially preheated air is introduced into the thermal oxidation furnace by the air preheater to assist the combustion of combustible flue gas in the thermal oxidation furnace, and at the same time, the flue gas cooled in the air preheater is introduced into the alkali washing tower;

[0029] (c) The alkali washing tower cools and washes the flue gas after the temperature is reduced, and purifies the flue gas into waste water and waste gas that meet the emission standards. The waste gas is passed into the chimney for emission under the wind force of the induced draft fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The schematic diagram of the structure of the waste salt treatment type pyrolysis device with the function of treating coke blocks according to the present invention is shown.

[0031] Figure 2 A partial structural cross-sectional view of the waste salt treatment type pyrolysis device with the function of treating coke blocks according to the present invention is shown.

[0032] Figure 3 A partial structural stereogram of the waste salt treatment type pyrolysis device with the function of treating coke blocks according to the present invention is shown. DETAILED DESCRIPTION

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0034] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0035] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0036] refer to Figure 1 to Figure 2According to a preferred embodiment of the present invention, a waste salt processing type pyrolysis device with a coke processing function will be described in detail below. The waste salt processing type pyrolysis device with a coke processing function is used to pyrolyze waste salt, remove coke produced by the pyrolysis of the waste salt and prevent coking, and recycle the combustible flue gas produced by the pyrolysis of organic matter in the waste salt.

[0037] The waste salt treatment type pyrolysis device with the function of treating coke blocks includes a pyrolysis kiln 10. The pyrolysis kiln 10 includes a kiln body 11, and the kiln body 11 includes a kiln head 111, a kiln tail 112, and a pyrolysis chamber 113 extending between the kiln head 111 and the kiln tail 112. The kiln head 111, the kiln tail 112, and the pyrolysis chamber 113 form a pyrolysis chamber 1101. The kiln body 11 also has a feed inlet 1102, a solid material outlet 1103, and a gas material outlet 1104 that are connected to the pyrolysis chamber 1101. The pyrolysis chamber 1101 is configured to allow high-temperature flue gas to enter to provide a pyrolysis environment for the waste salt. The solid material outlet 1103 is used to discharge solid matter generated after the pyrolysis of the waste salt, and the gas material outlet 1104 is used to discharge combustible flue gas generated after the pyrolysis of the waste salt.

[0038] The solid material outlet 1103 is formed at the kiln tail 112 , and the gas material outlet 1104 is formed at the kiln head 111 .

[0039] The kiln body 11 has a high end and a low end, the kiln head 111 is arranged at the high end, and the kiln tail 112 is arranged at the low end. The kiln body 11 is inclined at a predetermined angle to guide the waste salt in the pyrolysis chamber 1101 to move from the high end to the kiln tail 112 located at the low end, so that the solid matter generated after the pyrolysis of the waste salt is discharged from the solid material outlet 1103.

[0040] Preferably, the inclination angle of the kiln body 11 is 0.5° to 5°.

[0041] It is worth mentioning that the gas outlet 1104 and the solid outlet 1103 are respectively formed at the high end and the low end. Compared with the gas outlet 1104 and the solid outlet 1103 being arranged on the same side, this design can effectively prevent the solid matter discharged from the solid outlet 1103 from being affected by the airflow of the combustible smoke discharged from the gas outlet 1104, so that part of the solid matter is discharged from the gas outlet 1104 together with the combustible smoke, thereby increasing the purity of the combustible smoke discharged from the gas outlet 1104 and facilitating the recovery of the combustible smoke.

[0042] Furthermore, the kiln body 11 also has a cleaning port 1105, which is formed at the kiln head 111. The cleaning port 1105 is used to collect the waste salt that enters the kiln head 111 from the feed port 1102 but does not enter the pyrolysis chamber 113, and the solid matter that is driven by the combustible flue gas to flow to the gas outlet 1104 and is blocked by the inner wall of the kiln head 111 and falls.

[0043] The pyrolysis kiln 10 further includes at least two first seals 12 , which are respectively installed at the kiln head 111 and the kiln tail 112 to seal the kiln body 11 .

[0044] Preferably, three first seals 12 are provided, one first seal 12 is installed at the kiln head 111 to close the material cleaning port 1105, and the other two first seals 12 are installed at the kiln tail 112 to close the solid material outlet 1103 to ensure the airtightness of the kiln body 11 to avoid heat loss in the kiln body 11.

[0045] Preferably, the first sealing element 12 is embodied as a valve.

[0046] The waste salt processing type pyrolysis device with the function of processing coke blocks includes a coke block processing mechanism 20, which is installed on the kiln body 11. The coke block processing mechanism 20 is used to remove coke blocks formed on the inner wall of the pyrolysis chamber 113 due to the pyrolysis of the waste salt and prevent coking.

[0047] The coke block processing mechanism 20 includes a connecting shaft 21 and a plurality of coke block processing components 22. The coke block processing components 22 are arranged in the pyrolysis chamber 1101 and are installed on the connecting shaft 21. The connecting shaft 21 is installed on the kiln body 11. The pyrolysis chamber 113 and the connecting shaft 21 rotate relative to each other, so that the coke block processing components 22 can fully prevent coking on the inner wall of the pyrolysis chamber 113 and remove coke blocks.

[0048] In a preferred embodiment, the center line of the connecting shaft 21 coincides with the center line of the pyrolysis chamber 113, the connecting shaft 21 is rotatably sealed and connected between the kiln head 111 and the kiln tail 112, and the pyrolysis chamber 113 rotates and extends between the kiln head 111 and the kiln tail 112. When the pyrolysis chamber 113 and the connecting shaft 21 rotate, the coke blocks attached to the inner wall of the pyrolysis chamber 113 tend to detach from the inner wall of the pyrolysis chamber 113 due to the centrifugal force and gravity, so as to reduce the strength of the coke blocks, thereby reducing the difficulty of the coke block processing assembly 22 to clean the inner wall of the pyrolysis chamber 113. At the same time, the connecting shaft 21 drives the coke block processing assembly 22 to rotate in the pyrolysis chamber 1101, so as to completely remove the coke blocks attached to the inner wall of the pyrolysis chamber 113, and comprehensively implement the coking prevention operation on the inner wall of the pyrolysis chamber 113.

[0049] In a preferred embodiment, the pyrolysis chamber 113 and the connecting shaft 21 rotate in the same direction, and there is a predetermined speed difference between the pyrolysis chamber 113 and the connecting shaft 21. In this way, the pyrolysis chamber 113 and the connecting shaft 21 can achieve a synergistic effect, so that the coke block processing assembly 22 connected to the connecting shaft 21 can completely and effectively remove the coke blocks on the inner wall of the pyrolysis chamber 113, and completely prevent the inner wall of the pyrolysis chamber 113 from coking.

[0050] As a deformable method, the pyrolysis chamber 113 and the connecting shaft 21 rotate in opposite directions. The same purpose can be achieved, which will not be repeated here. In addition, when the pyrolysis chamber 113 and the connecting shaft 21 rotate, the coke blocks attached to the inner wall of the pyrolysis chamber 113 and the coke block processing assembly 22 connected to the connecting shaft 21 hinder each other, so that the interaction force between the coke block processing assembly 22 and the coke blocks is increased, thereby increasing the coke block removal force of the coke block processing assembly 22.

[0051] In a variant embodiment, the center line of the connecting shaft 21 coincides with the center line of the pyrolysis chamber 113, and the two ends of the connecting shaft 21 are fixedly connected to the kiln head 111 and the kiln tail 112, respectively, and the pyrolysis chamber 113 rotates and extends between the kiln head 111 and the kiln tail 112. When the pyrolysis chamber 113 rotates, the coke blocks attached to the inner wall of the pyrolysis chamber 113 gradually approach the coke block processing assembly 22, and the coke blocks are blocked by the coke block processing assembly 22 and cannot move with the pyrolysis chamber 113, so that the coke blocks are separated from the inner wall of the pyrolysis chamber 113, thereby completely removing the coke blocks, and at the same time, the coke block processing assembly 22 performs a comprehensive coking prevention treatment on the inner wall of the pyrolysis chamber 113.

[0052] In another embodiment, the center line of the connecting shaft 21 deviates from the center line of the pyrolysis chamber 113, and the two ends of the connecting shaft 21 are fixedly connected to the kiln head 111 and the kiln tail 112, respectively, and the pyrolysis chamber 113 rotates and extends between the kiln head 111 and the kiln tail 112. At this time, the pyrolysis chamber 113 rotates so that different positions of the inner wall of the pyrolysis chamber 113 contact the coke block processing assembly 22 connected to the connecting shaft 21, and the coke block processing assembly 22 connected to the connecting shaft 21 can also achieve the purpose of comprehensively decoking the inner wall of the pyrolysis chamber 113 and comprehensively preventing coking on the inner wall of the pyrolysis chamber 113, which will not be repeated here.

[0053] Those skilled in the art can understand that, the pyrolysis chamber 113 is stationary, and the connecting shaft 21 is rotatably and sealedly connected between the kiln head 111 and the kiln tail 112 and coincides with the center line of the pyrolysis chamber 113. At this time, the coke block processing assembly 22 connected to the connecting shaft 21 can also achieve the purpose of fully decoking the inner wall of the pyrolysis chamber 113 and fully preventing coking on the inner wall of the pyrolysis chamber 113, which will not be repeated here.

[0054] In order to enable those skilled in the art to understand this embodiment, in at least one of the following embodiments and corresponding drawings, the center line of the connecting shaft 21 coincides with the center line of the pyrolysis chamber 113, the connecting shaft 21 is rotatably and sealedly connected to the kiln body 11, and the pyrolysis chamber 113 rotates and extends between the kiln head 111 and the kiln tail 112. It is explained by way of example. Those skilled in the art should know that this is not a limitation of the present invention.

[0055] refer to Figures 2 to 3 The connecting shaft 21 has a gas delivery channel 2101 and an inlet 2102 connected to the gas delivery channel 2101, and the inlet 2102 is used to introduce high-temperature flue gas and ultra-high-temperature superheated steam into the gas delivery channel 2101, and the high-temperature flue gas and ultra-high-temperature superheated steam are transported from the gas delivery channel 2101 to the coke block processing component 22.

[0056] It is worth mentioning that the high-temperature flue gas can provide the temperature required for pyrolysis of the waste salt in the pyrolysis chamber 113, and the ultra-high-temperature superheated steam can prevent the waste salt from coking and promote the pyrolysis of the waste salt.

[0057] The coke block processing assembly 22 includes a scraper 221 and an air injection member 222 . The scraper 221 is connected to the connecting shaft 21 . The scraper 221 is used to scrape the coke blocks held on the inner wall of the pyrolysis chamber 113 .

[0058] The jet component 222 is arranged in the pyrolysis chamber 1101 and is installed on the connecting shaft 21. The jet component 222 has a connecting channel 22201 and at least one jet port 22202 connected to the connecting channel 22201. The connecting channel 22201 is connected to the gas transmission channel 2101, and the jet port 22202 is connected to the pyrolysis chamber 1101, so that the gas transmission channel 2101 can introduce high-temperature flue gas and ultra-high-temperature superheated steam into the connecting channel 22201 and spray them out from the jet port 22202, so as to spray high-temperature flue gas and ultra-high-temperature superheated steam to the waste salt in the pyrolysis chamber 113, so as to prevent the waste salt from coking and provide the waste salt in the pyrolysis chamber 113 with the temperature required for pyrolysis.

[0059] It is worth mentioning that the plurality of scrapers 221 can simultaneously remove the coke blocks on the inner wall of the pyrolysis chamber 113, thereby increasing the cleaning efficiency.

[0060] It is worth noting that while the scraper 221 scrapes off the coke formed on the inner wall of the pyrolysis chamber 113 by the waste salt, the scraper 221 stirs the waste salt so that the waste salt is fully in contact with the high-temperature flue gas in the pyrolysis chamber 1101, thereby improving the pyrolysis efficiency of the waste salt.

[0061] The jet member 222 is bent at one end away from the connecting shaft 21 and extends in the direction of the solid material outlet 1103, and the jet port 22202 faces the inner wall of the pyrolysis chamber 113, so that the high-temperature flue gas and ultra-high-temperature superheated steam ejected from the jet port 22202 can be sprayed with maximum impact force toward the inner wall of the pyrolysis chamber 113 and the waste salt accumulated in the pyrolysis chamber 113, so as to promote the pyrolysis of the waste salt in the pyrolysis chamber 113 and prevent the waste salt from coking on the inner wall of the pyrolysis chamber 113.

[0062] In a preferred embodiment, ten jet components 222 are provided, and the ten jet components 222 are distributed at intervals in the pyrolysis chamber 113, so that the high-temperature flue gas and ultra-high-temperature superheated steam ejected from the jet components 222 can fully spray the waste salt in the pyrolysis chamber 113, thereby accelerating the pyrolysis rate of the waste salt and reducing the probability of coking on the inner wall of the pyrolysis chamber 113.

[0063] It is worth mentioning that, taking the direction of the axial direction of the kiln body 11 and the projection direction from bottom to top as a reference, the jet member 222 forms 16 jet ports 22202. Taking the radial cross section of the kiln body 11 as a reference, the jet member 222 forms 5 jet ports 22202.

[0064] The side of the scraper 221 away from the connecting shaft 21 is parallel to the axial direction of the pyrolysis chamber 113 and extends toward the solid material outlet 1103, and the extension direction of the scraper 221 is parallel to the extension direction of the pyrolysis chamber 113. There is a predetermined distance between the scraper 221 and the inner wall of the pyrolysis chamber 113, so that the scraper 221 can remove the coke blocks while pushing the waste salt to move toward the solid material outlet 1103.

[0065] Preferably, the distance between the scraper 221 and the inner wall of the pyrolysis chamber 113 is set to 8-10 mm.

[0066] Specifically, when the pyrolysis chamber 113 and the connecting shaft 21 are both rotating, the coke block processing assembly 22 connected to the connecting shaft 21 rotates synchronously, and the jet element 222 sprays high-temperature flue gas and ultra-high-temperature superheated steam to the inner wall of the pyrolysis chamber 113, thereby comprehensively preventing the inner wall of the pyrolysis chamber 113 from coking, and evenly distributing high-temperature flue gas and ultra-high-temperature superheated steam to promote the pyrolysis of the waste salt. At the same time, the scraper 221 collides with the coke blocks attached to the inner wall of the pyrolysis chamber 113, so that the scraper 221 scrapes the coke blocks on the inner wall of the pyrolysis chamber 113, thereby cleaning the kiln body 11, ensuring the service life of the kiln body 11, and the scraper 221 guides the waste salt in the pyrolysis chamber 113 to the solid material outlet 1103, so that the solid matter generated after the pyrolysis of the waste salt can be discharged.

[0067] refer to Figure 1 Furthermore, the waste salt treatment type pyrolysis device with the function of processing coke blocks also includes a monitoring mechanism 30 and a controller 40, and the monitoring mechanism 30 is used to monitor the torque generated by the rotation of the connecting shaft 21. The monitoring mechanism 30 is communicatively connected to the controller 40, and the drive of the connecting shaft 21 is controllably connected to the controller 40. When the monitoring mechanism 30 detects that the torque generated by the rotation of the connecting shaft 21 is greater than the preset torque, the controller 40 controls the drive of the connecting shaft 21 to suspend operation according to the feedback of the monitoring mechanism 30, so as to protect the connecting shaft 21, so as to prevent the connecting shaft 21 from being deformed due to excessive torque, causing the scraper 221 to scrape the inner wall of the pyrolysis chamber 113.

[0068] Preferably, the monitoring mechanism 30 is implemented as a torque sensor, which converts the physical change of the torque of the connecting shaft 21 into an electrical signal and transmits it to the controller 40, and the controller 40 selectively controls the driving operation of the connecting shaft 21 according to the electrical signal.

[0069] refer to Figure 1The waste salt treatment type pyrolysis device with the function of treating coke blocks also includes a combustible flue gas treatment mechanism 50, which is connected to the gas outlet 1104 and the gas transmission channel 2101. The combustible flue gas treatment mechanism 50 is configured to treat the combustible flue gas generated by the pyrolysis of waste salt in the kiln body 11 and discharged from the gas outlet 1104, burn the combustible flue gas to decompose it into harmless gas and provide the heat of the harmless gas to fuel combustion to generate high-temperature flue gas and ultra-high-temperature superheated steam and introduce it into the gas transmission channel 2101, and is sprayed on the pyrolysis chamber 113 by the jet component 222, which provides a pyrolysis environment for the waste salt in the pyrolysis chamber 113 and prevents coking.

[0070] The combustible smoke treatment mechanism 50 includes a thermal oxidation furnace 51, which is used to burn the combustible smoke discharged from the kiln body 11, so that the light hydrocarbons and other combustible gases in the combustible smoke are fully burned into harmless gases under the auxiliary action of fuel and preheated air. The thermal oxidation furnace 51 has a first air intake port 5101 and a first exhaust port 5102. The first air intake port 5101 is connected to the gas outlet 1104 through a pipeline, so that the combustible smoke in the kiln body 11 can be introduced into the thermal oxidation furnace 51. The first exhaust port 5102 is used to exhaust the harmless gas generated by the combustion of the combustible smoke in the thermal oxidation furnace 51 under the auxiliary action of fuel and preheated air.

[0071] The thermal oxidation furnace 51 has an air supply port 5103 for providing preheated air to the combustible flue gas combustion in the thermal oxidation furnace 51 to promote the combustion of the combustible flue gas and provide a high-temperature combustion environment for the combustible flue gas.

[0072] The thermal oxidation furnace 51 has a first fuel supply port 5104 for providing fuel to the combustible flue gas in the thermal oxidation furnace 51 for combustion.

[0073] The combustible smoke treatment mechanism 50 further includes an air preheater 52, and the thermal oxidation furnace 51 is in communication with the air preheater 52, so that the thermal oxidation furnace 51 can introduce high-temperature smoke generated by the combustion of combustible smoke into the air preheater 52. The air preheater 52 is used to preheat air, and the air preheater 52 is configured to introduce preheated air into the thermal oxidation furnace 51, thereby providing a suitable combustion environment for the combustible smoke in the thermal oxidation furnace 51.

[0074] The air preheater 52 has a second air intake port 5201, a second air exhaust port 5202, an air inlet 5203 and an air discharge port 5204. The second air intake port 5201 is connected to the first air exhaust port 5102 so that the harmless gas discharged from the thermal oxidation furnace 51 is introduced into the air preheater 52. The air inlet 5203 is used to absorb external air. The air inlet 5203 is connected to the air discharge port 5204 through a first flow channel of the air preheater 52. The second air intake port 5201 is connected to the second air exhaust port 5202 through a second flow channel of the air preheater 52. The first flow channel is connected to the second flow channel. The air discharge port 5204 is connected to the air supply port 5103 through a pipeline. The air preheater 52 is configured to exchange the heat of the harmless gas introduced by the thermal oxidizer 51 with the air entering through the air inlet 5203, and the preheated air is discharged from the air outlet 5204 and enters the thermal oxidizer 51 through the air supply port 5103. The second exhaust port 5202 is used to discharge the flue gas after the heat exchange.

[0075] Specifically, in the process that the harmless gas discharged from the thermal oxidation furnace 51 enters the second flow channel through the second air intake port 5201 and is discharged from the second exhaust port 5202, the air enters the first flow channel through the air inlet port 5203, and the air is heated by the harmless gas in the second flow channel and then discharged from the air outlet port 5204 and enters the thermal oxidation furnace 51 through the air supply port 5103.

[0076] The combustible smoke treatment mechanism 50 also includes a blower 53, which is connected to the air preheater 52 to introduce outside air into the air preheater 52. The blower 53 is connected to the thermal oxidation furnace 51 to introduce outside air into the thermal oxidation furnace 51, so as to provide combustion support for the combustion of combustible smoke in the thermal oxidation furnace 51. The blower 53 has a third air intake port 5301 and a third air exhaust port 5302, and the third air intake port 5301 is connected to the outside. The thermal oxidation furnace 51 has a first cooling air port 5105, and the third exhaust port 5302 is connected to the first cooling air port 5105 and the air inlet 5203 through a pipeline.

[0077] Preferably, the operating speed of the blower 53 is adjustable. Therefore, the operating speed of the blower 53 can be used to change the amount of air introduced by the blower 53 into the air preheater 52 and the thermal oxidation furnace 51, thereby adjusting the degree of air preheating and controlling the amount of air required for the combustion of combustible flue gas in the thermal oxidation furnace 51.

[0078] It is worth mentioning that the pipeline connected to the first cooling air outlet 5105 and the pipeline connected to the air inlet 5203 are gathered into a main pipeline connected to the third exhaust port 5302, so that the air can be discharged from the third exhaust port 5302 and diverted to the thermal oxidation furnace 51 and the air preheater 52.

[0079] The combustible flue gas treatment mechanism 50 also includes a hot blast furnace 54, which is used to burn fuel. The fuel burns to produce high-temperature flue gas and ultra-high-temperature superheated steam under the auxiliary action of atomized process water and preheated air. The hot blast furnace 54 has a fourth air intake port 5401 and a fourth air exhaust port 5402. The fourth air intake port 5401 is connected to the air outlet port 5204, so that the air preheater 52 can supply preheated air to the hot blast furnace 54, thereby providing a suitable combustion environment for the fuel in the hot blast furnace 54 and accelerating the combustion of the fuel. The fourth exhaust port 5402 is connected to the inlet 2102, so as to introduce high-temperature flue gas and ultra-high-temperature superheated steam into the gas transmission channel 2101, thereby providing a pyrolysis environment for the waste salt in the kiln body 11, and providing ultra-high-temperature superheated steam to prevent the waste salt in the kiln body 11 from coking.

[0080] The hot blast stove 54 also has a second cooling vent 5403 , which is connected to the third exhaust port 5302 , so that the blower 53 introduces outside air into the hot blast stove 54 , thereby providing combustion support for the fuel combustion in the hot blast stove 54 .

[0081] It is worth mentioning that the pipeline connected to the second cooling air outlet 5403, the pipeline connected to the first cooling air outlet 5105 and the pipeline connected to the air inlet 5203 are gathered into a main pipeline connected to the third exhaust port 5302, so that the air can be discharged from the third exhaust port 5302 and diverted to the thermal oxidation furnace 51, the air preheater 52 and the hot air furnace 54.

[0082] The hot blast furnace 54 also has a second fuel supply port 5404 for providing fuel into the hot blast furnace 54 .

[0083] The hot blast furnace 54 also has an atomized water inlet 5405 for providing atomized process water for the combustion of fuel in the hot blast furnace 54 .

[0084] Preferably, the temperature of the high-temperature flue gas and ultra-high-temperature superheated steam discharged from the hot blast furnace 54 is between 650° C. and 700° C., so as to maximize the use of the sensible heat of the flue gas while also avoiding melting of the waste salt due to excessive temperature.

[0085] Specifically, the combustible flue gas in the kiln body 11 is introduced into the thermal oxidation furnace 51 through the gas outlet 1104, and the fuel is added to the thermal oxidation furnace 51 through the first fuel supply port 5104, and the preheated air is added to the thermal oxidation furnace 51 through the air supply port 5103, so that the combustible flue gas in the thermal oxidation furnace 51 is burned at high temperature for a predetermined time under the auxiliary action of the fuel and the preheated air to be completely decomposed into CO2, H2O, HCl, SO x 、NO x The blower 53 absorbs outside air through the third air intake port 5301, and the outside air is introduced into the thermal oxidation furnace 51 through the third exhaust port 5302, so as to provide combustion support for the combustion of the combustible flue gas in the thermal oxidation furnace 51. The harmless gas produced is 650-700°C, which is discharged from the first exhaust port 5102 and enters the air preheater 52. The blower 53 introduces outside air into the air preheater 52, and the air preheater 52 exchanges the heat of the harmless gas with the outside air entering through the air intake port 5203, so as to preheat the air to 350-400°C, and discharges it from the exhaust port 5204. The preheated air is introduced into the thermal oxidation furnace 51 and the hot blast furnace 54 through the pipeline, so as to provide preheated air for the combustion of the combustible flue gas in the thermal oxidation furnace 51, and at the same time, provide preheated air for the combustion of the fuel in the hot blast furnace 54. Fuel is introduced into the hot blast furnace 54 through the second fuel replenishing port 5404, and atomized process water is introduced into the hot blast furnace 54 through the atomized water inlet 5405, so that the fuel in the hot blast furnace 54 burns to produce high-temperature flue gas and ultra-high-temperature superheated steam with the assistance of preheated air and atomized process water. During this process, the combustion temperature of the hot blast furnace 54 is 850-900°C. In addition, the blower 53 introduces air to the second cooling air port 5403 through the third exhaust port 5302, so as to assist the combustion of fuel in the hot blast furnace 54, so that high-temperature flue gas and ultra-high-temperature superheated steam are discharged from the fourth exhaust port 5402 at a temperature of 650-700°C, and enter the gas transmission channel 2101 through the pipeline, so that the jet component 222 connected to the connecting shaft 21 can spray high-temperature flue gas and ultra-high-temperature superheated steam into the pyrolysis chamber 1101, so as to pyrolyze the waste salt in the kiln body 11 and prevent the waste salt from coking on the inner wall of the pyrolysis chamber 113. In this way, the combustible flue gas generated by the pyrolysis of organic matter in the industrial waste salt can be decomposed into harmless gas while its heat is utilized, thereby increasing the utilization rate of the industrial waste salt and avoiding the direct discharge of combustible flue gas to pollute the environment, and the overall operation is more energy-saving and environmentally friendly.

[0086] The combustible flue gas treatment mechanism 50 further includes a caustic washing tower 55, and the air preheater 52 is connected to the caustic washing tower 55 so as to introduce the flue gas cooled by the air preheater 52 into the caustic washing tower 55. The caustic washing tower 55 is configured to purify the flue gas and discharge it in the form of waste water and waste gas.

[0087] It is worth mentioning that the temperature of the flue gas introduced by the air preheater 52 to the alkali washing tower 55 is 450-500°C.

[0088] The alkali scrubber 55 has a fifth air intake port 5501 and a fifth air exhaust port 5502. The fifth air intake port 5501 is connected to the second air exhaust port 5202 through a pipeline, so that the air preheater 52 can discharge the cooled flue gas to the alkali scrubber 55. The fifth air exhaust port 5502 is used to discharge the waste gas generated by the alkali scrubber 55.

[0089] The alkali washing tower 55 also has a wastewater discharge port 5503 for discharging wastewater generated by the alkali washing tower 55 when purifying flue gas.

[0090] The combustible smoke treatment mechanism 50 further includes an induced draft fan 56 , which is connected to the alkali washing tower 55 to guide the purified waste gas in the alkali washing tower 55 to be discharged.

[0091] The induced draft fan 56 has a sixth air intake port 5601 and a sixth air exhaust port 5602 . The sixth air intake port 5601 is connected to the fifth exhaust port 5502 through a pipeline, so that the induced draft fan 56 can transfer the waste gas in the alkali washing tower 55 and discharge it through the sixth exhaust port 5602 .

[0092] The combustible flue gas treatment mechanism 50 further includes a chimney 57 , and the induced draft fan 56 is connected to the chimney 57 . The induced draft fan 56 is used to introduce the waste gas purified by the alkali washing tower 55 into the chimney 57 so that the waste gas is discharged through the chimney 57 .

[0093] The chimney 57 has a seventh air intake port 5701 and a seventh air exhaust port 5702. The seventh air intake port 5701 is connected to the sixth air exhaust port 5602, so that the chimney 57 can discharge the waste gas introduced by the induced draft fan 56. The seventh air exhaust port 5702 is connected to the outside to discharge the waste gas.

[0094] According to another aspect of the present invention, a working method of a waste salt treatment type pyrolysis device having a coke treatment function is proposed, and the steps are as follows:

[0095] (A) High-temperature flue gas and ultra-high-temperature superheated steam are introduced into the connecting channel 22201 from the gas transmission channel 2101, and discharged into the pyrolysis chamber 1101 from the air jet 22202, thereby providing a pyrolysis environment for the waste salt in the pyrolysis chamber 1101 and preventing coking on the inner wall of the pyrolysis chamber 113;

[0096] (B) the pyrolysis chamber 113 and the connecting shaft 21 rotate relative to each other, so that the scraper 221 located in the pyrolysis chamber 1101 scrapes the coke blocks generated by the pyrolysis of the waste salt on the inner wall of the pyrolysis chamber 113;

[0097] (C) The combustible flue gas generated by the pyrolysis of organic matter in the waste salt is discharged from the gas outlet 1104 and enters the thermal oxidation furnace 51. The combustible flue gas burns in the thermal oxidation furnace 51 to decompose into harmless gas and is introduced into the air preheater 52. The air preheater 52 exchanges the heat of the harmless gas with the air. The preheated air is introduced into the hot blast furnace 54. The fuel in the hot blast furnace 54 burns with the assistance of the preheated air and atomized process water to generate high-temperature flue gas and ultra-high-temperature superheated steam. The high-temperature flue gas and ultra-high-temperature superheated steam are introduced into the gas transmission channel 2101, thereby providing a pyrolysis environment for the waste salt in the pyrolysis chamber 113 and providing purge gas for the jet element 222.

[0098] Preferably, the working method of the waste salt treatment type pyrolysis device having the function of processing coke blocks further comprises:

[0099] (a) the blower 53 absorbs outside air and introduces the outside air into the air preheater 52 so that the air preheater 52 performs air preheating operation, and the blower 53 introduces outside air into the thermal oxidation furnace 51 to provide combustion support for the combustion of combustible gas in the thermal oxidation furnace 51, and at the same time, the blower 53 introduces outside air into the hot blast furnace 54 to provide combustion support for the combustion of fuel in the hot blast furnace 54;

[0100] (b) Part of the preheated air is introduced into the thermal oxidation furnace 51 by the air preheater 52 to assist the combustion of the combustible flue gas in the thermal oxidation furnace 51, and at the same time, the flue gas cooled in the air preheater 52 is introduced into the alkali washing tower 55;

[0101] (c) The alkali washing tower 55 cools and washes the flue gas after the temperature is reduced, and purifies the flue gas into waste water and waste gas that meet the emission standards. The waste gas is affected by the wind force of the induced draft fan 56 and is passed into the chimney 57 for emission.

[0102] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A waste salt treatment type pyrolysis device with a coke processing function, used for pyrolyzing waste salt, removing coke produced by pyrolysis of the waste salt and preventing coking, and recycling combustible flue gas produced by pyrolysis of organic matter in the waste salt, characterized in that: The waste salt treatment type pyrolysis device with the function of treating coke blocks comprises: A pyrolysis kiln, the pyrolysis kiln comprising a kiln body, the kiln body comprising a kiln head, a kiln tail and a pyrolysis chamber extending between the kiln head and the kiln tail, the kiln head, the kiln tail and the pyrolysis chamber forming a pyrolysis chamber, the kiln body further comprising a gas outlet communicating with the pyrolysis chamber, the gas outlet being used to discharge combustible smoke generated after pyrolysis of the waste salt, the kiln body further comprising a feed inlet and a solid outlet communicating with the pyrolysis chamber, the solid outlet being formed at the kiln tail, the gas outlet being formed at the kiln head, the kiln body comprising a high end portion and a low end portion, the solid outlet being used to discharge solid matter generated after pyrolysis of the waste salt, the kiln head being arranged at the high end portion, the kiln tail being arranged at the low end portion, the kiln body being inclined at a predetermined angle to guide the waste salt in the pyrolysis chamber to move from the high end portion to the kiln tail at the low end portion; A coke block processing mechanism, the coke block processing mechanism includes a connecting shaft and a plurality of coke block processing components, the connecting shaft is installed on the kiln body, the connecting shaft has a gas delivery channel and an inlet connected to the gas delivery channel, the coke block processing components include a scraper and an injection component, the injection component has a communication channel and at least one injection port connected to the communication channel, the communication channel is connected to the gas delivery channel, the injection port is connected to the pyrolysis chamber, the injection component is installed on the connecting shaft, the injection component is used to spray high-temperature flue gas and ultra-high-temperature superheated steam into the pyrolysis chamber, the scraper is connected to the connecting shaft, and the scraper is connected to the inner wall of the pyrolysis chamber. There is a gap between the walls, the pyrolysis chamber and the connecting shaft rotate relative to each other so that the scraper scrapes the coke blocks on the inner wall of the pyrolysis chamber, the jet component is installed between the connecting shaft and the scraper component, one end of the jet component away from the connecting shaft is bent toward the inner wall of the pyrolysis chamber and extends toward the solid material outlet, the jet port faces the inner wall of the pyrolysis chamber, the side of the scraper component away from the connecting shaft is parallel to the axial direction of the pyrolysis chamber and extends toward the solid material outlet, and the extension direction of the scraper component is parallel to the extension direction of the pyrolysis chamber, so that the scraper component can remove the coke blocks while pushing the waste salt to move toward the solid material outlet; - Combustible smoke treatment mechanism.

2. The waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 1 is characterized in that: The combustible smoke treatment mechanism includes a thermal oxidation furnace, which has a first air intake port and a first exhaust port. The first air intake port is connected to the gas outlet through a pipeline so that the combustible smoke in the kiln body can be introduced into the thermal oxidation furnace. The thermal oxidation furnace is used to burn the combustible smoke discharged from the kiln body to fully burn the light hydrocarbons and other combustible gases in the combustible smoke. The first exhaust port is used to exhaust the harmless gas generated by the combustion of the combustible smoke in the thermal oxidation furnace. The combustible smoke treatment mechanism includes an air preheater, which has a second air intake port, a second exhaust port, an air inlet and an air discharge port. The second air intake port is connected to the first exhaust port so that the harmless gas discharged from the thermal oxidation furnace is introduced into the air preheater. The air inlet is used to absorb external air. The air inlet is connected to the first flow channel of the air preheater through a The vent is connected, the second air intake is connected to the second exhaust port through a second flow channel of the air preheater, the first flow channel is socketed with the second flow channel, the air preheater is configured to exchange the heat of the harmless gas introduced by the thermal oxidation furnace with the air entering the air inlet, and the second exhaust port is used to discharge the flue gas after heat exchange. The combustible flue gas treatment mechanism includes a hot blast furnace, and the hot blast furnace has a fourth air intake port and a fourth exhaust port. The fourth air intake port is connected to the vent so that the air preheater can supply preheated air to the hot blast furnace. The hot blast furnace is used to burn fuel, so that the fuel burns to produce high-temperature flue gas and ultra-high-temperature superheated steam under the auxiliary action of atomized process water and preheated air. The fourth exhaust port is connected to the inlet port to introduce high-temperature flue gas and ultra-high-temperature superheated steam into the gas transmission channel.

3. The waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 2 is characterized in that: The kiln body also has a cleaning port, which is formed at the kiln head. The cleaning port is used to collect the waste salt that enters the kiln head from the feed port but does not enter the pyrolysis chamber, and the solid matter that is driven by the combustible flue gas to flow to the gas outlet and is blocked by the inner wall of the kiln head and falls. The pyrolysis kiln also includes at least two first seals, which are respectively installed at the kiln head and the kiln tail.

4. The waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 3 is characterized in that: The thermal oxidizer also has an air supply port for providing preheated air to the combustible flue gas combustion in the thermal oxidizer. The air outlet is connected to the air supply port through a pipeline. The air preheater is configured to introduce the preheated air into the thermal oxidizer.

5. The waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 4 is characterized in that: The combustible smoke treatment mechanism also includes a blower, which has a third air intake port and a third air exhaust port. The third air intake port is connected to the outside world and is used to absorb outside air. The thermal oxidation furnace has a first cooling air port, and the hot air furnace also has a second cooling air port. The third exhaust port is connected to the first cooling air port, the air inlet, and the second cooling air port through a pipeline. The blower is configured to introduce outside air into the air preheater, the thermal oxidation furnace and the hot air furnace.

6. The waste salt treatment type pyrolysis device with the function of treating coke according to claim 5, characterized in that: The combustible flue gas treatment mechanism also includes an alkali washing tower, which has a fifth air intake and a fifth exhaust port. The fifth air intake is connected to the second exhaust port through a pipeline so that the air preheater can discharge the cooled flue gas to the alkali washing tower. The alkali washing tower is configured to purify the flue gas and discharge it in the form of wastewater and waste gas. The fifth exhaust port is used to discharge the waste gas generated by the purification of the alkali washing tower.

7. The waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 6, characterized in that: The combustible smoke treatment mechanism also includes an induced draft fan, which has a sixth air intake port and a sixth air exhaust port, and the sixth air intake port is connected to the fifth exhaust port through a pipeline. The induced draft fan is configured to transfer the waste gas in the alkali washing tower and discharge it through the sixth exhaust port. The combustible smoke treatment mechanism also includes a chimney, which has a seventh air intake port and a seventh exhaust port, and the seventh air intake port is connected to the sixth exhaust port. The induced draft fan is configured to introduce the waste gas in the alkali washing tower into the chimney, and the seventh exhaust port is connected to the outside for discharging the waste gas.

8. The working method of the waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 7, characterized in that: The working method of the waste salt treatment type pyrolysis device with the function of processing coke blocks comprises the following steps: (A) high-temperature flue gas and ultra-high-temperature superheated steam are introduced into the communicating channel from the gas transmission channel and discharged into the pyrolysis chamber from the gas jet port, thereby providing a pyrolysis environment for the waste salt in the pyrolysis chamber and preventing coking of the inner wall of the pyrolysis chamber; (B) the pyrolysis chamber and the connecting shaft rotate relative to each other, so that the scraper located in the pyrolysis chamber scrapes the coke blocks generated by the pyrolysis of the waste salt on the inner wall of the pyrolysis chamber and pushes the waste salt to move toward the solid material outlet; (C) The combustible flue gas generated by the pyrolysis of organic matter in the waste salt is discharged from the gas outlet and enters the thermal oxidation furnace. The combustible flue gas is burned in the thermal oxidation furnace to decompose into harmless gas and introduced into the air preheater. The air preheater exchanges the heat of the harmless gas with the air. The preheated air is introduced into the hot blast furnace. The fuel in the hot blast furnace burns with the assistance of the preheated air and atomized process water to generate high-temperature flue gas and ultra-high-temperature superheated steam. The high-temperature flue gas and ultra-high-temperature superheated steam are introduced into the gas transmission channel to provide a pyrolysis environment for the waste salt in the pyrolysis chamber and provide purge gas for the jet element.

9. The working method of the waste salt treatment type pyrolysis device with the function of treating coke blocks according to claim 8, characterized in that: The working method of the waste salt treatment type pyrolysis device with the function of processing coke blocks comprises the following steps: (a) the blower absorbs outside air and introduces the outside air into the air preheater so that the air preheater performs air preheating operation, and the blower introduces outside air into the thermal oxidation furnace to provide combustion support for the combustion of combustible gas in the thermal oxidation furnace, and at the same time, the blower introduces outside air into the hot blast furnace to provide combustion support for the combustion of fuel in the hot blast furnace; (b) partially preheated air is introduced into the thermal oxidation furnace by the air preheater to assist the combustion of combustible flue gas in the thermal oxidation furnace, and at the same time, the flue gas cooled in the air preheater is introduced into the alkali washing tower; (c) The alkali washing tower cools and washes the flue gas after the temperature is reduced, and purifies the flue gas into waste water and waste gas that meet the emission standards. The waste gas is passed into the chimney for emission under the wind force of the induced draft fan.

Images