CN110500598B - Phthalic anhydride production tail gas heat accumulation oxidation burns device - Google Patents
Phthalic anhydride production tail gas heat accumulation oxidation burns device Download PDFInfo
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- CN110500598B CN110500598B CN201910681197.2A CN201910681197A CN110500598B CN 110500598 B CN110500598 B CN 110500598B CN 201910681197 A CN201910681197 A CN 201910681197A CN 110500598 B CN110500598 B CN 110500598B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention relates to a heat storage oxidation incineration device for tail gas in phthalic anhydride production, which comprises: the inlet end of the flue gas pyrolysis chamber is communicated with the outlet end of the waste gas pipeline, and the outlet end of the flue gas pyrolysis chamber is communicated with the inlet end of the waste heat boiler; and the air inlet end of the spray washing tower is communicated with the air outlet end of the waste heat boiler, the air outlet end of the spray washing tower is communicated with one end of an exhaust pipe, and the other end of the exhaust pipe is communicated with the atmosphere. The invention aims to provide a phthalic anhydride production tail gas heat storage oxidation incineration device which is more sufficient in thermal oxidation and can accurately control the pyrolysis time.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a heat storage oxidation incineration device for tail gas produced by phthalic anhydride.
Background
Phthalic anhydride is a cyclic anhydride formed by intramolecular dehydration of phthalic acid. Phthalic anhydride is a white solid, is an important raw material in chemical industry, and is particularly used for manufacturing plasticizers. The tail gas from the production of phthalic anhydride by the naphthalene method contains a small amount of phthalic anhydride, maleic anhydride, naphthoquinone benzoate, a small amount of unconverted naphthalene and other organic compounds, CO and SO2, and if the tail gas is directly discharged, the environment is seriously damaged. Therefore, it is necessary to design a device for treating tail gas from the production of terephthalic acid.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem of serious damage to the environment caused by the exhaust emission in the atmosphere in the prior art.
Therefore, the technical scheme adopted by the invention is that the heat storage oxidation incineration device for the tail gas generated in the phthalic anhydride production comprises:
the inlet end of the flue gas pyrolysis chamber is communicated with the outlet end of the waste gas pipeline, and the outlet end of the flue gas pyrolysis chamber is communicated with the inlet end of the waste heat boiler;
the gas inlet end of the spray washing tower is communicated with the gas outlet end of the waste heat boiler, the gas outlet end of the spray washing tower is communicated with one end of the exhaust pipe, and the other end of the exhaust pipe is communicated with the atmosphere.
Preferably, the flue gas pyrolysis chamber comprises:
the flue gas distribution chamber is provided with a plurality of gas inlets, and each gas inlet is respectively communicated with the gas outlet ends of the plurality of waste gas pipelines;
the thermal oxidation chamber is arranged at the upper end of the flue gas distribution chamber and is communicated with the flue gas distribution chamber, a combustion-supporting burner is arranged on the outer wall of the thermal oxidation chamber, the gas outlet end of the thermal oxidation chamber is communicated with one end of a connecting pipe, and the other end of the connecting pipe is communicated with the gas inlet end of the waste heat boiler;
the heat storage chambers are arranged between the flue gas distribution chamber and the thermal oxidation chamber and distributed along the horizontal direction, and each heat storage chamber is internally provided with a heat storage body which is an electric heating rod.
Preferably, a blower is arranged beside the combustion-supporting combustor, and the air supply end of the blower is communicated with the air inlet end of the combustion-supporting combustor.
Preferably, a flame arrester is arranged on the waste gas pipeline.
Preferably, the method further comprises the following steps:
and the gas inlet end of the economizer is communicated with the gas outlet end of the waste heat boiler, and the gas outlet end of the economizer is communicated with the gas inlet end of the spray washing tower.
Preferably, a pyrolysis time control device is arranged on the connecting pipe, and the pyrolysis time control device includes:
the adjusting pipe is arranged on the connecting pipe, the adjusting pipe is vertically communicated with the connecting pipe, the connecting pipe is horizontally arranged, one end of the adjusting pipe extends to the lower part of the connecting pipe, a first sealing plate is arranged at the lower end of the adjusting pipe, the other end of the adjusting pipe extends to the upper part of the connecting pipe, and a second sealing plate is arranged at the upper end of the adjusting pipe;
the piston is arranged in the adjusting pipe and can reciprocate up and down in the adjusting pipe, a conical boss is arranged at the bottom end of the piston, and the end with the small diameter of the conical boss faces downwards;
the movable column is arranged in the adjusting pipe, is arranged above the piston and can reciprocate up and down in the adjusting pipe, a sliding block is arranged on the side wall of the movable column, a sliding groove in the vertical direction is arranged on the inner wall of the adjusting pipe, the sliding block can reciprocate up and down in the sliding groove, and a bearing is fixedly arranged in the top end of the movable column;
the spring is arranged in the adjusting pipe, one end of the spring is fixedly connected with the bottom end of the movable column, and the other end of the spring is fixedly connected with the top end of the piston;
the screw rod penetrates through the second sealing plate to be provided with a threaded hole, the threaded hole is internally provided with the screw rod, the lower end of the screw rod extends into the adjusting pipe and is fixedly connected with the inner ring of the bearing, the upper end of the screw rod extends to the position above the second sealing plate and is fixedly connected with the knob, and the outer wall of the screw rod is provided with scales along the vertical direction;
one end of the air pipe is communicated with one end, close to the thermal oxidation chamber, of the connecting pipe, and the other end of the air pipe is communicated with the bottom end of the first sealing plate.
Preferably, a pressure alarm device is arranged on the connecting pipe, and the pressure alarm device comprises:
the groove body is arranged on the outer wall of one end, close to the thermal oxidation chamber, of the connecting pipe, a processor is arranged in the groove body, and an alarm is arranged on the outer wall of the groove body;
the pressure sensor is arranged on the inner wall of the connecting pipe, the pressure sensor is electrically connected with the processor, and the processor is electrically connected with the alarm.
The technical scheme of the invention has the following advantages: the invention relates to a heat storage oxidation incineration device for tail gas produced by phthalic anhydride, which comprises: the inlet end of the flue gas pyrolysis chamber is communicated with the outlet end of the waste gas pipeline, and the outlet end of the flue gas pyrolysis chamber is communicated with the inlet end of the waste heat boiler; the gas inlet end of the spray washing tower is communicated with the gas outlet end of the waste heat boiler, the gas outlet end of the spray washing tower is communicated with one end of the exhaust pipe, and the other end of the exhaust pipe is communicated with the atmosphere. Because organic matters in the waste gas generated in the production of phthalic anhydride are subjected to high-temperature oxidative decomposition, harmful gases such as CO, SO2 and the like are removed after being reacted with alkali liquor and washed, and finally, the standard-reaching exhaust gas is generated and enters the atmosphere, SO that the atmospheric environment is protected.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a pyrolysis time control apparatus according to the present invention.
Fig. 3 is a schematic structural diagram of the pressure monitoring device of the present invention.
The drawings are numbered as follows: 1-a flue gas pyrolysis chamber, 101-a flue gas distribution chamber, 102-a heat storage chamber, 103-a thermal oxidation chamber, 2-a waste gas pipeline, 3-a waste heat boiler, 4-a spray washing tower, 5-an exhaust pipe, 6-a combustion-supporting burner, 7-a connecting pipe, 8-a blower, 9-a flame arrester, 10-an economizer, 11-a regulating pipe, 12-a second sealing plate, 13-a piston, 14-a conical boss, 15-a moving column, 16-a sliding block, 17-a sliding chute, 18-a bearing, 19-a screw rod, 20-a threaded hole, 21-a knob, 22-an air pipe, 23-a first sealing plate, 24-a groove body, 25-a processor, 26-an alarm, 27-a pressure sensor and 28-a spring.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a heat storage oxidation incineration device for tail gas produced by phthalic anhydride, which comprises the following components in percentage by weight as shown in figure 1:
the waste heat boiler comprises a flue gas pyrolysis chamber 1, wherein the gas inlet end of the flue gas pyrolysis chamber 1 is communicated with the gas outlet end of a waste gas pipeline 2, and the gas outlet end of the flue gas pyrolysis chamber 1 is communicated with the gas inlet end of a waste heat boiler 3;
and the air inlet end of the spray washing tower 4 is communicated with the air outlet end of the waste heat boiler 3, the air outlet end of the spray washing tower 4 is communicated with one end of an exhaust pipe 5, and the other end of the exhaust pipe 5 is communicated with the atmosphere.
The working principle of the technical scheme is as follows: phthalic anhydride waste gas enters a flue gas pyrolysis chamber 1 through a waste gas pipeline 2, organic matters are oxidized and decomposed under the high-temperature condition, then the high-temperature flue gas passes through heat exchange by-product saturated steam (2.0MPa, 210 ℃) in a waste heat boiler 3, effective energy is recovered, and the flue gas after heat exchange is washed by alkaline water in a spray washing tower 4 and then reaches the standard and is discharged to the ambient atmosphere.
The beneficial effects of the above technical scheme are that: because organic matters in the waste gas generated in the production of phthalic anhydride are subjected to high-temperature oxidative decomposition, harmful gases such as CO, SO2 and the like are removed after being reacted with alkali liquor and washed, and finally, the standard-reaching exhaust gas is generated and enters the atmosphere, SO that the atmospheric environment is protected.
In one embodiment, as shown in fig. 1, the flue gas pyrolysis chamber 1 comprises:
the flue gas distribution chamber 101 is provided with a plurality of gas inlets, and each gas inlet is respectively communicated with the gas outlet ends of the plurality of waste gas pipelines 2;
the thermal oxidation chamber 103 is arranged at the upper end of the flue gas distribution chamber 101, the thermal oxidation chamber 103 is communicated with the flue gas distribution chamber 101, a combustion-supporting burner 6 is arranged on the outer wall of the thermal oxidation chamber 103, the gas outlet end of the thermal oxidation chamber 103 is communicated with one end of a connecting pipe 7, and the other end of the connecting pipe 7 is communicated with the gas inlet end of the waste heat boiler 3;
the heat storage chambers 102 are arranged between the flue gas distribution chamber 101 and the thermal oxidation chamber 103 and are distributed along the horizontal direction, and heat storage bodies are arranged in each heat storage chamber 102 and are electric heating rods.
The beneficial effects of the above technical scheme are that: phthalic anhydride waste gas enters into flue gas distribution chamber 101 through exhaust gas pipeline 2, and the direct high-efficient heat transfer of heat accumulator in even flow direction regenerator 102 again preheats to about 650 ~ 750 ℃, then gets into the abundant oxidative decomposition of hydrocarbon organic matter or organic matter VOC in the waste gas in the thermal oxidation chamber 103, gives out the heat, and later, the flue gas of high temperature advances exhaust-heat boiler 3 heat transfer recovery effectual energy, make full use of heat, the waste of reduction resource.
In one embodiment, a blower 8 is installed beside the combustion-supporting burner 6, and the blowing end of the blower 8 is communicated with the air inlet end of the combustion-supporting burner 6.
The beneficial effects of the above technical scheme are that: the combustion-supporting burner 6 adopts diesel oil as fuel, a start-up fan is needed to supplement air during combustion, the supplement air quantity is 1500m3/h, the diesel oil is not needed after normal operation, and the temperature in the thermal oxidation chamber 103 can be quickly increased.
In one embodiment, a flame arrester 9 is provided on the exhaust gas duct 2.
The beneficial effects of the above technical scheme are that: flame arrestor 9 is a safety device used to prevent the spread of flames of flammable gases and flammable liquid vapors. Generally, the flame-retardant fire-retardant composite material is arranged in a pipeline for conveying combustible gas or a ventilated tank, so that flame propagation is prevented, and the safety of the pipeline is improved.
In one embodiment, further comprising: and the gas inlet end of the economizer 10 is communicated with the gas outlet end of the waste heat boiler 3, and the gas outlet end of the economizer 10 is communicated with the gas inlet end of the spray washing tower 4.
The beneficial effects of the above technical scheme are that: the economizer 10 is installed at the lower part of a flue at the tail of a boiler and used for recovering waste heat of exhausted smoke, water fed by the boiler is heated into a heating surface of saturated water under the pressure of a steam drum, and the economizer is called as an economizer because the economizer absorbs heat of high-temperature smoke, reduces the exhaust temperature of the smoke, saves energy and improves efficiency.
In one embodiment, as shown in fig. 2, a pyrolysis time control device is disposed on the connection pipe 7, and the pyrolysis time control device includes:
the adjusting pipe 11 is arranged on the connecting pipe 7, the adjusting pipe 11 is vertically communicated with the connecting pipe 7, the connecting pipe 7 is arranged in the horizontal direction, one end of the adjusting pipe 11 extends to the lower part of the connecting pipe 7, a first sealing plate 23 is arranged at the lower end of the adjusting pipe 11, the other end of the adjusting pipe 11 extends to the upper part of the connecting pipe 7, and a second sealing plate 12 is arranged at the upper end of the adjusting pipe 11;
the piston 13 is arranged in the adjusting pipe 11, the piston 13 can reciprocate up and down in the adjusting pipe 11, a conical boss 14 is arranged at the bottom end of the piston 13, and the end with the small diameter of the conical boss 14 faces downwards;
the movable column 15 is arranged in the adjusting pipe 11, the movable column 15 is arranged above the piston 13, the movable column 15 can reciprocate up and down in the adjusting pipe 11, a sliding block 16 is arranged on the side wall of the movable column 15, a sliding groove 17 in the vertical direction is arranged on the inner wall of the adjusting pipe 11, the sliding block 16 can reciprocate up and down in the sliding groove 17, and a bearing 18 is fixedly arranged in the top end of the movable column 15;
the spring 28 is arranged in the adjusting pipe 11, one end of the spring 28 is fixedly connected with the bottom end of the movable column 15, and the other end of the spring 28 is fixedly connected with the top end of the piston 13;
a threaded hole 20 is formed in the second sealing plate 12 in a penetrating manner, a screw 19 is arranged in the threaded hole 20, the lower end of the screw 19 extends into the adjusting pipe 11 and is fixedly connected with an inner ring of the bearing 18, the upper end of the screw 19 extends to the upper side of the second sealing plate 12 and is fixedly connected with a knob 21, and scales are arranged on the outer wall of the screw 19 in the vertical direction;
one end of the air pipe 22 is communicated with one end of the connecting pipe 7 close to the thermal oxidation chamber 103, and the other end of the air pipe 22 is communicated with the bottom end of the first sealing plate 23.
The working principle of the technical scheme is as follows: along with the time, the waste gas continuously enters the thermal oxidation chamber 103, the air pressure in the thermal oxidation chamber 103 is higher and higher, the air pressure is applied to the conical boss 14 through the connecting pipe 7 and the air pipe 22, when the pressure exceeds the elastic force of the spring 28, the conical boss 14 is pushed to move upwards, the conical boss 14 drives the piston 13 to move upwards along the inner wall of the joint pipe 11, when the conical boss 14 moves to the through position of the connecting pipe 7 and the adjusting pipe 11, a gap exists in a channel, the waste gas flows into the waste heat boiler 3 through the gap to perform heat exchange treatment, the air pressure in the thermal oxidation chamber 103 is reduced, the elastic force of the spring 28 is larger than the pressure of the air pressure, and under the action of the elastic force, the piston 13 moves downwards to the through position of the connecting pipe 7 and the adjusting pipe. The flow that waste gas got into is certain, reaches corresponding pressure and just can make the piston shift up and open the passageway of connecting pipe 7, consequently, can guarantee that waste gas stays certain time back in hot oxidation chamber 103, reaches the pressure that opens and shuts, and connecting pipe 7 just opens, gets into next process and handles. In addition, the rotary knob 21 is rotated, the screw rod 19 is in threaded fit with the threaded hole 20, the bearing 18 is driven to move upwards, the bearing drives the moving column 15 to move upwards, and therefore the effect of adjusting the displacement of the spring 28 is achieved, the displacement of the conical boss 14 to the through position is changed due to the change of the position of the spring, the pushed balance pressure is changed, and the retention time of waste gas in the thermal oxidation chamber 103 is changed. The slide block 16 reciprocates up and down in the slide groove 17, which limits the range of adjusting the balance pressure and prevents the moving column 15 from rotating. The first and second sealing plates 23 and 12 are used to seal both ends of the adjustment tube 11.
The beneficial effects of the above technical scheme are: the pyrolysis time control device realizes the control of the thermal oxidation time of the waste gas in the thermal oxidation chamber by adjusting the balance pressure, so that the waste gas can be sufficiently and fully pyrolyzed at high temperature, and the quality of incineration pyrolysis is improved; in addition, the rotary knob is rotated to adjust the corresponding scales on the screw rod, and the length of the thermal oxidation time is adjusted to meet the requirements of different flow rates on the pyrolysis time of the waste gas. Waste gas reaches the pyrolysis time, and the connecting pipe will be opened and carried to next process and handle, has improved high-temperature pyrolysis's efficiency. In addition, the pyrolysis time control device also improves the air pressure of the waste gas in the pyrolysis process, so that the pyrolysis reaction of the waste gas is more sufficient.
In one embodiment, as shown in fig. 3, a pressure alarm device is disposed on the connection pipe 7, and the pressure alarm device includes:
a groove body 24 arranged on the outer wall of one end of the connecting pipe 7 close to the thermal oxidation chamber 103, wherein a processor 25 is arranged in the groove body 24, and an alarm 26 is arranged on the outer wall of the groove body 24;
The beneficial effects of the above technical scheme are: the pressure sensor 27 can detect the air pressure in the connecting pipe 7, when the pressure value exceeds the pressure warning value set in the processor 25, the processor 25 can start the alarm 26 on the outer wall of the groove body 24 to remind workers of overhigh pressure and take pressure reduction measures in time to prevent unsafe accidents.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides a phthalic anhydride production tail gas regenerative oxidation burns device which characterized in that includes:
the waste heat boiler comprises a flue gas pyrolysis chamber (1), wherein the gas inlet end of the flue gas pyrolysis chamber (1) is communicated with the gas outlet end of a waste gas pipeline (2), and the gas outlet end of the flue gas pyrolysis chamber (1) is communicated with the gas inlet end of a waste heat boiler (3);
the gas inlet end of the spray washing tower (4) is communicated with the gas outlet end of the waste heat boiler (3), the gas outlet end of the spray washing tower (4) is communicated with one end of an exhaust pipe (5), and the other end of the exhaust pipe (5) is communicated with the atmosphere;
the flue gas pyrolysis chamber (1) comprises:
the flue gas distribution chamber (101) is provided with a plurality of gas inlets, and each gas inlet is correspondingly communicated with the gas outlet ends of the plurality of waste gas pipelines (2);
the thermal oxidation chamber (103) is arranged at the upper end of the flue gas distribution chamber (101), the thermal oxidation chamber (103) is communicated with the flue gas distribution chamber (101), a combustion-supporting burner (6) is arranged on the outer wall of the thermal oxidation chamber (103), the gas outlet end of the thermal oxidation chamber (103) is communicated with one end of a connecting pipe (7), and the other end of the connecting pipe (7) is communicated with the gas inlet end of the waste heat boiler (3);
the heat storage chambers (102) are arranged between the flue gas distribution chamber (101) and the thermal oxidation chamber (103) and are distributed along the horizontal direction, and heat storage bodies are arranged in each heat storage chamber (102) and are electric heating rods;
be provided with pyrolysis time controlling means on connecting pipe (7), pyrolysis time controlling means includes:
the adjusting pipe (11) is arranged on the connecting pipe (7), the adjusting pipe (11) is vertically communicated with the connecting pipe (7), the connecting pipe (7) is arranged in the horizontal direction, one end of the adjusting pipe (11) extends to the lower part of the connecting pipe (7), a first sealing plate (23) is arranged at the lower end of the adjusting pipe (11), the other end of the adjusting pipe (11) extends to the upper part of the connecting pipe (7), and a second sealing plate (12) is arranged at the upper end of the adjusting pipe (11);
the piston (13) is arranged in the adjusting pipe (11), the piston (13) can reciprocate up and down in the adjusting pipe (11), a conical boss (14) is arranged at the bottom end of the piston (13), and one end of the conical boss (14) with a small diameter faces downwards;
the movable column (15) is arranged in the adjusting pipe (11), the movable column (15) is arranged above the piston (13), the movable column (15) can reciprocate up and down in the adjusting pipe (11), a sliding block (16) is arranged on the side wall of the movable column (15), a sliding groove (17) in the vertical direction is formed in the inner wall of the adjusting pipe (11), the sliding block (16) can reciprocate up and down in the sliding groove (17), and a bearing (18) is fixedly arranged in the top end of the movable column (15);
the spring (28) is arranged in the adjusting pipe (11), one end of the spring (28) is fixedly connected with the bottom end of the moving column (15), and the other end of the spring (28) is fixedly connected with the top end of the piston (13);
the screw rod (19) penetrates through the second sealing plate (12) and is provided with a threaded hole (20), the screw rod (19) is arranged in the threaded hole (20), the lower end of the screw rod (19) extends into the adjusting pipe (11) and is fixedly connected with the inner ring of the bearing (18), the upper end of the screw rod (19) extends above the second sealing plate (12) and is fixedly connected with a knob (21), and scales are arranged on the outer wall of the screw rod (19) along the vertical direction;
one end of the air pipe (22) is communicated with one end, close to the thermal oxidation chamber (103), of the connecting pipe (7), and the other end of the air pipe (22) is communicated with the bottom end of the first sealing plate (23).
2. The phthalic anhydride production tail gas thermal storage oxidizing incineration device as claimed in claim 1, characterized in that a blower (8) is installed beside the combustion-supporting burner (6), and a blowing end of the blower (8) is communicated with an air inlet end of the combustion-supporting burner (6).
3. The phthalic anhydride production tail gas thermal storage oxidizing incineration device as claimed in claim 1, characterized in that a flame arrester (9) is arranged on the exhaust gas pipeline (2).
4. The phthalic anhydride production tail gas thermal storage oxidation incineration device of claim 1, further comprising:
the gas inlet end of the economizer (10) is communicated with the gas outlet end of the waste heat boiler (3), and the gas outlet end of the economizer (10) is communicated with the gas inlet end of the spray washing tower (4).
5. The phthalic anhydride production tail gas thermal storage oxidation incineration device as claimed in claim 1, wherein a pressure alarm device is arranged on the connecting pipe (7), and the pressure alarm device comprises:
the groove body (24) is arranged on the outer wall of one end, close to the thermal oxidation chamber (103), of the connecting pipe (7), a processor (25) is arranged in the groove body (24), and an alarm (26) is arranged on the outer wall of the groove body (24);
pressure sensor (27), set up on connecting pipe (7) inner wall, pressure sensor (27) with treater (25) electric connection, treater (25) with alarm (26) electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910681197.2A CN110500598B (en) | 2019-07-26 | 2019-07-26 | Phthalic anhydride production tail gas heat accumulation oxidation burns device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910681197.2A CN110500598B (en) | 2019-07-26 | 2019-07-26 | Phthalic anhydride production tail gas heat accumulation oxidation burns device |
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| CN110500598A CN110500598A (en) | 2019-11-26 |
| CN110500598B true CN110500598B (en) | 2020-03-17 |
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| GB2295034B (en) * | 1994-11-12 | 1997-01-29 | Bosch Gmbh Robert | Instantaneous water heater |
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| CN204345669U (en) * | 2014-12-16 | 2015-05-20 | 江苏百茂源环保科技有限公司 | A kind of accumulation of heat CIU |
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