A device for high-temperature desorption of organic volatiles in an anaerobic environment

Abstract

The utility model relates to a device for high-temperature desorption of organic volatiles in an anaerobic environment, wherein the high-molecular adsorbent containing organic volatiles is loaded by a desorption loading vehicle, and includes: a nitrogen generator, a prefabricated heat-insulating furnace body, an anaerobic sealed door, a power track for entering and exiting the kiln, a gear reducer, a heating burner, a furnace, a heat exchanger, a pyrolysis burner, a pyrolysis chamber and an internal circulation fan. The beneficial effects of the utility model are: it can be used to batch desorb high-boiling organic matter in the high-molecular adsorbent at 200-800°C in an anaerobic environment, safely pyrolyze, and keep it separated from the adsorbent, which can ensure the physical and chemical integrity of the high-molecular adsorbent; it can be used to activate the adsorption capacity of the high-molecular adsorbent, extend the service life of the adsorbent, and reduce the cost of replacing the adsorbent; it is suitable for manufacturers with a large number of adsorbents, or solid waste recycling companies specializing in deepening adsorbents, and it occupies a small area and consumes less labor.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous and safe desorption equipment for combustible substances under high-temperature and low-oxygen working conditions, and in particular relates to a device for high-temperature desorption of organic volatiles under an anaerobic environment. Background Art

[0002] Under the conditions of large air volume, high temperature and low oxygen concentration, high molecular adsorbents are generally used to absorb organic matter and odor in the exhaust gas of combustible substances. When the high molecular adsorbent is saturated with adsorption, various volatile organic substances adsorbed by it are desorbed and released at one time through means such as pressurization and heating. The high molecular adsorbents used include activated carbon, zeolite, quartz sand, silica gel and activated alumina.

[0003] At present, the most mainstream high molecular adsorption material is activated carbon. Activated carbon includes granular carbon and honeycomb carbon. The molecular gap between granular carbon and honeycomb carbon is wide, the adsorption capacity is large, and it is fragile; the ignition point is low, only 350-400℃, and it is flammable; the desorption temperature of activated carbon is generally controlled within 200℃. For safety reasons, some manufacturers even control the desorption temperature of activated carbon below 100℃. In the market, the desorption temperature of activated carbon is controlled at a lower temperature, resulting in some high-boiling point organic matter that cannot be desorbed and permanently occupies the adsorption capacity of activated carbon; these high-boiling point organic matter include toluene with a boiling point of 110℃, acetic acid with a boiling point of 118℃, ethylbenzene with a boiling point of 136℃, silicone oil with a boiling point of 260℃, water glass with a boiling point of 212℃, and polyether silicone oil with a boiling point of 250℃; because the service life of activated carbon is shortened, the manufacturer's solid waste treatment cost increases; if activated carbon is to be replaced, it will also incur a large expenditure. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a device for high-temperature desorption of organic volatiles in an anaerobic environment.

[0005] This equipment for high-temperature desorption of organic volatiles in an anaerobic environment, in which high-molecular adsorbents containing organic volatiles are loaded by a desorption loading vehicle, includes: a nitrogen generator, a prefabricated heat-insulating furnace body, an anaerobic sealed door, a power track for entering and exiting the kiln, a gear reducer, a heating burner, a furnace, a heat exchanger, a pyrolysis burner, a pyrolysis chamber and an internal circulation fan;

[0006] The gear reducer is electrically connected to the kiln inlet and outlet power track, and the desorbed material loading vehicle is placed on the kiln inlet and outlet power track; a part of the kiln inlet and outlet power track is located inside the prefabricated insulation furnace body, and the other part is located outside the prefabricated insulation furnace body. The length of the part of the kiln inlet and outlet power track located inside the prefabricated insulation furnace body is much longer than the length of the desorbed material loading vehicle;

[0007] A plurality of desorption material layers are vertically arranged on the desorption material loading vehicle; an air inlet slot is arranged on the side wall of each desorption material layer located at the front of the desorption material loading vehicle; a plurality of insertion blowing slots corresponding to the positions of the air inlet slots of the plurality of desorption material layers are arranged on the prefabricated heat preservation furnace body; the insertion blowing slots are connected to the air inlet slots;

[0008] The prefabricated insulation furnace body is provided with an oxygen-free sealed door on the entry side of the desorbed material loading vehicle;

[0009] The air outlet arranged on the prefabricated heat preservation furnace body is connected to the air inlet of the internal circulation fan, the air outlet of the internal circulation fan is connected to the air inlet of the heat exchanger, the furnace is connected to another air inlet on the heat exchanger, and a heating burner corresponding to the furnace is also arranged; the air outlet of the heat exchanger is connected to the air inlet arranged on the prefabricated heat preservation furnace body through a pipeline;

[0010] The nitrogen generator is connected to the air inlet on the prefabricated insulation furnace body; the air outlet arranged on the prefabricated insulation furnace body is connected to the pyrolysis chamber through the air duct, and the pyrolysis chamber is provided with a corresponding pyrolysis burner; the pyrolysis chamber is also provided with an adjustable oxygen supplement port and an air outlet.

[0011] As a preferred embodiment: the upper end of the anaerobic sealed door is connected to a lifting door winch, and the lifting door winch is used to open and close the anaerobic sealed door; a door clamping device is also provided on one side of the anaerobic sealed door outside the prefabricated insulation furnace body.

[0012] As a preferred embodiment, a pressure supply air compressor is also provided on the connecting pipe between the nitrogen generator and the air inlet of the prefabricated insulation furnace body.

[0013] As a preferred embodiment, a zero-leakage electric valve is provided on the connecting air duct between the prefabricated insulation furnace body and the pyrolysis chamber.

[0014] As a preferred embodiment, the air outlet of the pyrolysis chamber is connected to a combustion-supporting negative pressure fan through an air duct.

[0015] As a preferred embodiment: after the desorbed material loading vehicle is fixed in place in the prefabricated insulation furnace body, it is connected with the inserted blowing slot.

[0016] The beneficial effects of the utility model are:

[0017] The equipment for desorbing volatile organic matter designed by the utility model can be used for batch desorption of high-boiling-point organic matter in a high-molecular adsorbent at 200-800° C. in an anaerobic environment, safely pyrolyze, and keep it separated from the adsorbent, thereby ensuring the physical and chemical integrity of the high-molecular adsorbent; it can be used to activate the adsorption capacity of the high-molecular adsorbent, and can also extend the service life of the adsorbent, thereby reducing the cost of replacing the adsorbent.

[0018] It is equipped with a heat exchanger, which is used to make the internal circulating air indirectly heat up to ensure that the high-molecular adsorbent does not come into contact with open flames and is safe; it is equipped with a lifting door winch and is equipped with a lifting door winch to improve the sealing of the prefabricated insulation furnace body; this device is suitable for manufacturers with a large amount of adsorbents, or solid waste recycling companies that specialize in deepening adsorbents, and it occupies a small area and consumes less labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the equipment for high-temperature desorption of volatile organic compounds in an anaerobic environment.

[0020] Explanation of the reference numerals in the accompanying drawings: nitrogen generator 1, pressure supply air compressor 2, prefabricated insulation furnace body 3, insert blowing slot 4, desorption material loader 5, anaerobic sealing door 6, door clamping device 7, kiln inlet and outlet power track 8, gear reducer 9, loading and unloading material position 10, heating burner 11, furnace 12, heat exchanger 13, adjustable oxygen supply port 14, zero leakage electric valve 15, pyrolysis burner 16, pyrolysis chamber 17, internal circulation fan 18, combustion-supporting negative pressure fan 19, lifting door winch 20. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0022] As an example, Figure 1 As shown, a device for high-temperature desorption of organic volatiles in an anaerobic environment, wherein a high molecular adsorbent containing organic volatiles is loaded by a desorption loading vehicle 5, comprising: a nitrogen generator 1, a prefabricated heat-insulating furnace body 3, an anaerobic sealed door 6, a kiln inlet and outlet power track 8, a gear reducer 9, a heating burner 11, a furnace 12, a heat exchanger 13, a pyrolysis burner 16, a pyrolysis chamber 17 and an internal circulation fan 18;

[0023] The gear reducer 9 is electrically connected to the kiln in-and-out power track 8, and the desorbed material loading vehicle 5 is placed on the kiln in-and-out power track 8; a part of the kiln in-and-out power track 8 is located inside the prefabricated insulation furnace body 3, and another part is located outside the prefabricated insulation furnace body 3, and the length of the part of the kiln in-and-out power track 8 located inside the prefabricated insulation furnace body 3 is much longer than the length of the desorbed material loading vehicle 5;

[0024] A plurality of desorbed material layers are vertically arranged on the desorbed material loading vehicle 5; an air inlet slot is provided on the side wall of each desorbed material layer located at the front of the desorbed material loading vehicle 5; a plurality of insertion blowing slots 4 are provided on the prefabricated heat preservation furnace body 3, which are opposite to the positions of the air inlet slots of the plurality of desorbed material layers; the insertion blowing slots 4 are connected to the air inlet slots;

[0025] The prefabricated heat preservation furnace body 3 is provided with an anaerobic sealed door 6 at the entrance side of the desorbed material loading vehicle 5; the upper end of the anaerobic sealed door 6 is connected to a lifting door winch 20, and the lifting door winch 20 is used to open and close the anaerobic sealed door 6; the anaerobic sealed door 6 is also provided with a door pressing device 7 on one side outside the prefabricated heat preservation furnace body 3;

[0026] The air outlet arranged on the prefabricated heat preservation furnace body 3 is connected to the air inlet of the internal circulation fan 18, the air outlet of the internal circulation fan 18 is connected to the air inlet of the heat exchanger 13, the furnace 12 is connected to another air inlet of the heat exchanger 13, and a heating burner 11 corresponding to the furnace 12 is also provided; the air outlet of the heat exchanger 13 is connected to the air inlet arranged on the prefabricated heat preservation furnace body 3 through a pipeline; a loading and unloading material position 10 is also provided outside the prefabricated heat preservation furnace body 3, which is used as a position for the desorbed material loading vehicle to stop briefly, so as to facilitate the loading and unloading of the high molecular adsorbed material of the volatile organic matter to be desorbed;

[0027] The nitrogen generator 1 is connected to the air inlet on the prefabricated insulation furnace body 3, and a pressure supply air compressor 2 is also provided on the connecting pipe between the nitrogen generator 1 and the air inlet of the prefabricated insulation furnace body 3; the air outlet arranged on the prefabricated insulation furnace body 3 is connected to the pyrolysis chamber 17 through an air duct, and a zero-leakage electric valve 15 is provided on the connecting air duct between the prefabricated insulation furnace body 3 and the pyrolysis chamber 17, and a corresponding pyrolysis burner 16 is provided in the pyrolysis chamber 17; the pyrolysis chamber 17 is also provided with an adjustable oxygen supply port 14, and the pyrolysis chamber 17 is provided with an air outlet, and the air outlet of the pyrolysis chamber 17 is connected to a combustion-supporting negative pressure fan 19 through an air duct.

[0028] When the equipment for high-temperature desorption of volatile organic compounds in an anaerobic environment is working:

[0029] The gear reducer 9 drives the kiln in-and-out power rail 8 to deliver the desorbed material loading vehicle 5 into the prefabricated insulation furnace body 3; the air inlet slots of multiple groups of desorbed material layers on the desorbed material loading vehicle 5 are all inserted into the corresponding insertion blowing slots 4 on the prefabricated insulation furnace body 3, which is conducive to the forced passage of hot air through the multiple groups of desorbed material layers, uniform heating, and can avoid excessive local temperature of multiple groups of desorbed material layers;

[0030] The anaerobic sealed door 6 is closed by lifting the door winch 20, and the cylinder of the door pressing device 7 is started, and the door pressing device 7 presses the anaerobic sealed door 6 into the prefabricated thermal insulation furnace body 3 from the outside; the heating burner 11 and the internal circulation fan 18 are started, and the heating burner 11 works, and the heat in the furnace 12 is quickly accumulated. The heat in the furnace 12 is added to the internal circulation air blown by the internal circulation fan 18 through the heat exchanger 13, and the air outlet of the heat exchanger 13 enters the prefabricated thermal insulation furnace body 3, and the temperature in the prefabricated thermal insulation furnace body 3 is increased to 80-100°C;

[0031] The small nitrogen generator 1 is turned on. After the nitrogen produced by the small nitrogen generator 1 is pressurized by the pressure supply air compressor 2, the nitrogen is introduced into the prefabricated insulation furnace body 3 due to the pressure difference, and 20% of the oxygen content in the initial air in the prefabricated insulation furnace body 3 is driven away. Because the carbon contained in the multiple groups of desorption material layers on the desorption material loading vehicle 5 is easily ignited, the closed environment in the prefabricated insulation furnace body 3 requires that no air oxygen enters during the entire high-temperature desorption process, so as to further reduce the risk;

[0032] The zero-leakage electric valve 15 and the pyrolysis burner 16 are opened, and the pyrolysis burner 16 is started to heat the pyrolysis chamber 17 to 200-800°C. The volatile organic matter gradually overflows from the prefabricated insulation furnace body 3 to the pyrolysis chamber 17, and the volatile organic matter is pyrolyzed in the pyrolysis chamber 17. While pyrolyzing, the adjustable oxygen supply port 14 is opened to supply oxygen to the pyrolysis chamber 17. After the volatile organic matter undergoes a period of pyrolysis in the pyrolysis chamber 17, the gas and water after pyrolysis in the pyrolysis chamber 17 are exhausted by the negative pressure fan 19.

Claims

1. A device for high-temperature desorption of organic volatiles in an anaerobic environment, wherein a polymer adsorbent containing organic volatiles is loaded by a desorption material loading vehicle (5), characterized in that: include: A nitrogen generator (1), a prefabricated heat-insulating furnace body (3), an oxygen-free sealed door (6), a kiln inlet and outlet power rail (8), a gear reducer (9), a heating burner (11), a furnace (12), a heat exchanger (13), a pyrolysis burner (16), a pyrolysis chamber (17), and an internal circulation fan (18); The gear reducer (9) is electrically connected to the kiln inlet and outlet power track (8), and the desorbed material loading vehicle (5) is placed on the kiln inlet and outlet power track (8); a portion of the kiln inlet and outlet power track (8) is located inside the prefabricated thermal insulation furnace body (3), and another portion is located outside the prefabricated thermal insulation furnace body (3), and the length of the portion of the kiln inlet and outlet power track (8) located inside the prefabricated thermal insulation furnace body (3) is much greater than the length of the desorbed material loading vehicle (5); A plurality of desorbed material layers are vertically arranged on the desorbed material loading vehicle (5); an air inlet slot is provided on the side wall of each desorbed material layer located at the front of the desorbed material loading vehicle (5); a plurality of insertion blowing slots (4) are provided on the prefabricated heat-insulating furnace body (3) and are opposite to the air inlet slots of the plurality of desorbed material layers; the insertion blowing slots (4) are connected to the air inlet slots; The prefabricated heat-insulating furnace body (3) is provided with an oxygen-free sealed door (6) on the side where the desorbed material loading vehicle (5) enters; An air outlet provided on the prefabricated heat-insulating furnace body (3) is connected to an air inlet of an internal circulation fan (18), the air outlet of the internal circulation fan (18) is connected to an air inlet on a heat exchanger (13), the furnace (12) is connected to another air inlet on the heat exchanger (13), and a heating burner (11) corresponding to the furnace (12) is also provided; the air outlet of the heat exchanger (13) is connected to the air inlet provided on the prefabricated heat-insulating furnace body (3) through a pipeline; The nitrogen generator (1) is connected to an air inlet on the prefabricated heat-insulating furnace body (3); the air outlet provided on the prefabricated heat-insulating furnace body (3) is connected to the pyrolysis chamber (17) through an air duct, and a corresponding pyrolysis burner (16) is provided in the pyrolysis chamber (17); the pyrolysis chamber (17) is also provided with an adjustable oxygen supplementation port (14), and the pyrolysis chamber (17) is provided with an air outlet.

2. The device for high temperature desorption of organic volatiles in an anaerobic environment according to claim 1, characterized in that: The upper end of the anaerobic sealed door (6) is connected to a lifting door winch (20), and the lifting door winch (20) is used to open and close the anaerobic sealed door (6); a door pressing device (7) is also provided on one side of the anaerobic sealed door (6) located outside the prefabricated heat-insulating furnace body (3).

3. The device for high temperature desorption of organic volatiles in an anaerobic environment according to claim 1, characterized in that: A pressure supply air compressor (2) is also provided on the connecting pipe between the nitrogen generator (1) and the air inlet of the prefabricated heat-insulating furnace body (3).

4. The device for high temperature desorption of organic volatiles in an anaerobic environment according to claim 1, characterized in that: A zero-leakage electric valve (15) is provided on the connecting air duct between the prefabricated heat-insulating furnace body (3) and the pyrolysis chamber (17).

5. The device for high temperature desorption of organic volatiles in an anaerobic environment according to claim 4, characterized in that: The air outlet of the pyrolysis chamber (17) is connected to a combustion-supporting negative pressure fan (19) via an air duct.

6. The device for high temperature desorption of organic volatiles in an anaerobic environment according to claim 1, characterized in that: After the desorbed material loading vehicle (5) enters the prefabricated heat-insulating furnace body (3) and is fixed in place, it is connected with the insertion blowing slot (4).

Images