CN114806607A - High-efficient safe detachable coke oven crude gas waste heat recovery tedge device - Google Patents
High-efficient safe detachable coke oven crude gas waste heat recovery tedge device Download PDFInfo
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- CN114806607A CN114806607A CN202210359726.9A CN202210359726A CN114806607A CN 114806607 A CN114806607 A CN 114806607A CN 202210359726 A CN202210359726 A CN 202210359726A CN 114806607 A CN114806607 A CN 114806607A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4218—Influencing the heat transfer which act passively, e.g. isolations, heat sinks, cooling ribs
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
- C10B27/06—Conduit details, e.g. valves
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a high-efficiency safe detachable coke oven crude gas waste heat recovery riser device, which comprises an oil-gas separation filter and a waste heat collecting device, wherein the oil-gas separation filter is arranged on the riser; the outer wall of the oil-gas separation filter is wrapped with a jacket layer; the waste heat collecting device comprises a rising pipe cylinder and a sleeve type spiral coil pipe; the sleeve type spiral coil comprises a water outlet/heat conducting oil pipe and a jacket type outer sleeve, wherein an inlet of the water outlet/heat conducting oil pipe is communicated with an outlet of a water outlet/heat conducting oil transition pipe of the oil-gas separation filter, an outlet of the water outlet/heat conducting oil pipe extends out of the riser pipe body, and an overpressure alarm device for detecting pressure change is arranged in the jacket type outer sleeve. The invention has simple structure, low manufacturing cost and high-efficiency and safe waste heat recovery effect.
Description
Technical Field
The invention relates to the field of raw coke oven gas waste heat recovery, in particular to a high-efficiency safe detachable raw coke oven gas waste heat recovery riser device.
Background
The coking coal generates coke in the coking process and simultaneously generates a large amount of raw coke gas, and the heat quantity carried out by the coking coal is up to 36 percent. In order to recycle the heat brought by the raw gas, a riser waste heat recovery system is basically adopted to recycle the heat of the raw gas in China. The coke oven riser is a key device and an energy gathering point in the coking process, and no mature recycling technology exists so far due to complex technical reasons. The device mainly comprises a rising pipe body, a bridge pipe, a gas collecting pipe, a turning plate seat and an ammonia water nozzle, wherein crude gas enters from a gas inlet at the bottom of a cylinder body, and the crude gas exchanges heat with a heat-conducting medium in the cylinder body from top to bottom so as to recover the sensible heat of the crude gas. The bend of the bridge pipe is provided with an ammonia water nozzle for spraying hot ammonia water, and the crude gas is cooled by ammonia water evaporation. The bridge pipe is also provided with a steam nozzle or a high-pressure ammonia nozzle. When coal is charged into the carbonization chamber, the steam or ammonia water is sprayed to generate negative pressure to guide the crude gas to enter the gas collecting pipe so as to reduce the flue gas dissipated from the coal charging hole. The turning plate seat is provided with a turning plate (also called a water seal valve), when the carbonization chamber is coked, the turning plate is closed, ammonia water sprayed from the bridge pipe overflows along the periphery of the turning plate to form water seal so as to prevent crude gas from escaping from the gas collecting pipe.
At present, CN211570540U discloses a riser of a heat exchange medium flow automatic protection crude gas waste heat recovery heat exchanger, which controls the on-off of heat exchange through the pressure difference between the inlet and the outlet of crude gas or the pressure of the inlet, when the gasifier of the riser fails to cause internal leakage, the pressure difference of the crude gas channel in the riser increases, so that the valve cuts off the continuous inflow of the heat exchange medium of the riser heat exchanger, and stops the operation of the riser, thereby playing the role of protecting the coke oven.
However, in the above structure, although the problem of medium leakage commonly existing in the existing coke oven crude gas riser is partially improved, the problem of coking of the heat exchange surface of the riser still exists. The problem of heat loss and water resource waste is also brought by the heat absorption and gasification of a large amount of sprayed ammonia water, and the design of a novel high-efficiency safe coke oven raw gas waste heat recovery riser device is urgent.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the invention provides a raw coke oven gas waste heat recovery riser device, which solves the problems of low waste heat recovery efficiency, medium leakage and coking of a heat exchange surface of a coke oven raw coke oven gas riser.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-efficiency safe detachable coke oven crude gas waste heat recovery riser device comprises an oil-gas separation filter and a waste heat collecting device; the inner cavity of the oil-gas separation filter is respectively provided with an air inlet and an air outlet, the air inlet of the oil-gas separation filter is connected with a raw gas inlet pipe, the air outlet of the oil-gas separation filter is connected with a riser raw gas inlet pipe, the other end of the riser raw gas inlet pipe is communicated with a waste heat collecting device, the outer wall of the oil-gas separation filter is wrapped with a jacket layer and is connected with a water inlet/heat conducting oil pipe, and a water outlet/heat conducting oil transition pipe of the oil-gas separation filter is connected out; the waste heat collecting device comprises a riser cylinder and a sleeve type spiral coil, the sleeve type spiral coil is arranged in the riser cylinder, one end of a riser raw gas inlet pipe is connected with a gas outlet of the oil-gas separation filter, the other end of the riser raw gas inlet pipe is communicated into the riser cylinder, and a raw gas outlet pipe is connected to the riser cylinder; the sleeve type spiral coil comprises a water outlet/heat conducting oil pipe and a jacket type outer sleeve, wherein the inlet of the water outlet/heat conducting oil pipe is communicated with the outlet of a water outlet/heat conducting oil transition pipe of the oil-gas separation filter, the outlet of the water outlet/heat conducting oil pipe extends out of the interior of the ascending pipe barrel, the section of the water outlet/heat conducting oil pipe corresponding to the interior of the ascending pipe barrel is a spiral coil, and the jacket type outer sleeve is correspondingly wrapped outside the spiral coil; an overpressure alarm device for detecting pressure change is arranged in the jacket type outer sleeve.
In the scheme, the ascending pipe crude gas inlet pipe and the crude gas inlet pipe are designed on the ascending pipe cylinder, the sleeve type spiral coil pipe is installed inside the ascending pipe cylinder, and the overpressure alarm device is installed inside the jacket type outer sleeve. The raw gas flows in the horizontal direction of the spiral coil pipe in the ascending pipe barrel, heat is transferred to heat-conducting media in the pipe through the jacketed outer sleeve, and heat-conducting media such as water or heat-conducting oil flow in the jacketed outer sleeve to complete energy conversion. When the spiral coil pipe, namely the inner pipe, is damaged, the heat-conducting medium in the pipe firstly leaks into the interlayer formed by the jacketed outer sleeve, and the interlayer is internally provided with an overpressure alarm device, so that when the heat-conducting medium leaks, the pressure naturally rises to cause an alarm, and the safety of the ascending pipe is ensured. When the jacketed outer sleeve is damaged, the pressure is naturally reduced because the jacketed outer sleeve is communicated with the raw coke oven gas, and the overpressure alarm device can also give an alarm. Meanwhile, the jacket type outer sleeve also plays a dual role in safety performance. If the raw gas is in direct contact with the spiral coil, the heat conducting medium absorbs heat, so that the temperature in the coil is too high. When the heat transfer medium is water, boiling or turning water into gas for a long time may cause tube bursting or leakage. When the heat conducting medium is heat conducting oil, the temperature of the heat conducting oil is too high, carbon deposit and coking are easy to generate in the pipeline for a long time, and then pipe explosion is generated. The interlayer of the jacket type outer sleeve is used as intermediate transition, air is used for heat transfer, on one hand, the heat exchange efficiency is not greatly influenced, and although a certain amount of heat loss exists, the heat loss enhances the safety of waste heat recovery.
Furthermore, a first filter screen is arranged in the raw gas inlet pipe; the inner cavity of the oil-gas separation filter is internally provided with a second filter screen, and the second filter screen divides the inner cavity into a left cavity and a right cavity. The raw gas enters the left cavity after being filtered by the first filter screen, and then enters the right cavity after passing through the second filter screen.
Furthermore, a support rod is arranged in the left cavity, a plurality of detachable oil dispersing caps are sequentially and movably arranged on the support rod along the oil-gas movement direction, and a motor for driving the detachable oil dispersing caps to expand and contract is further arranged on the oil-gas separation filter; and a fixed oil dispersing cap is arranged in the right cavity. Detachable oil dispersing cap, simple structure, the manufacturing of being convenient for can also take out the washing, more conveniently separates the greasy dirt in the raw coke oven gas, has guaranteed oil-gas separation filter's life-span.
Furthermore, in order to further filter the raw gas entering the riser barrel, a third filter screen and a valve are sequentially arranged on the riser raw gas inlet pipe.
Furthermore, in order to avoid excessive attachment and frequent detachment of the outer wall of the sleeve-type spiral coil, the side wall of the top of the ascending pipe cylinder body is provided with a flushing hole, the flushing hole is controlled to be opened and closed by a closed flange safety valve, and the bottom of the ascending pipe cylinder body is connected with a waste water pipe.
Furthermore, the bottom of the ascending pipe barrel is provided with an ascending pipe base, the ascending pipe base is provided with a side door, waste water in the ascending pipe barrel falls into the ascending pipe base, and the waste water pipe is connected out of the bottom of the ascending pipe base.
Furthermore, the top of the ascending pipe cylinder body is provided with a reducing pipe welding flange, and the top of the ascending pipe cylinder body is connected with a water outlet/heat conducting oil pipe through the matching of the reducing pipe welding flange.
Further, an oil-gas separation filter support is arranged at the bottom of the oil-gas separation filter, and the support is arranged outside the jacket layer.
Preferably, the jacket layer of the oil-gas separation filter is connected with a first water/heat transfer oil switching elbow and is connected with a water/heat transfer oil transition pipe of the oil-gas separation filter through the first water/heat transfer oil switching elbow, and the water/heat transfer oil transition pipe of the oil-gas separation filter is connected with a water/heat transfer oil outlet pipe through a second water/heat transfer oil switching elbow.
Preferably, the water inlet/heat conducting oil pipe is connected with the jacket layer of the oil-gas separation filter through a water inlet/heat conducting oil switching elbow.
The efficient, safe and detachable coke oven crude gas waste heat recovery riser device has the advantages that the sleeve type spiral coil pipe is arranged in the riser pipe body, crude gas flows in the riser pipe along the horizontal direction of the outer pipe of the spiral coil pipe, heat is transferred to heat-conducting media in the inner pipe through the interlayer of the spiral coil pipe, heat-conducting media such as water or heat-conducting oil flow in the inner pipe of the spiral coil pipe, waste heat recovery is achieved, when the inner pipe is damaged, the heat-conducting media in the pipe firstly leak into the interlayer, the interlayer is internally provided with the overpressure alarm device, when the heat-conducting media leak, pressure naturally rises to cause alarm, and safety of the riser pipe device is guaranteed. When the shell of the spiral coil pipe is damaged, the pressure naturally reduces and an alarm can be given at any time due to the communication with the raw coke oven gas. And it has connect the oil-gas separation filter to take the place of on the left of the tedge, through tertiary separation filtration earlier one-step reduction carbomorphism room exhaust raw coke oven gas temperature, make the raw coke oven gas temperature of discharging into the tedge safer and cleaner, oil-gas separation filter's bilayer structure, and communicate with bushing type spiral coil, make waste heat recovery efficiency increase substantially, be equipped with detachable oil cap in oil-gas separation filter's the left cavity, be convenient for periodic replacement, compromise when realizing tedge waste heat recovery device's high efficiency waste heat recovery performance and preventing coking performance, and moreover, the steam generator is simple in structure, low in manufacturing cost, economical and practical.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention.
FIG. 2 is a perspective view of the riser in the preferred embodiment of the invention.
Figure 3 is a perspective view of a telescoping helical coil in a preferred embodiment of the invention.
Figure 4 is a cross-sectional view of the interior of the riser in a preferred embodiment of the invention.
In the figure, 1 is a riser cylinder 10, a sleeve type spiral coil pipe 11, a second water/heat conducting oil switching elbow pipe 13, a raw gas inlet pipe 14, an oil-gas separation filter 14-1, a left chamber 14-2, a right chamber 16, a water inlet/heat conducting oil pipe 17, a water/heat conducting oil switching elbow pipe 18, a first water/heat conducting oil switching elbow pipe 19, a water/heat conducting oil switching pipe 2 of the oil-gas separation filter, a riser raw gas inlet pipe 20, an oil-gas separation filter support 21, a detachable oil dispersing cap 22, a fixed oil dispersing cap 23, a first filter screen 24, a second filter screen 25, a third filter screen 3, a raw gas outlet pipe 4, a flushing hole 5, a riser base 5-1, a side door 6, a reducing pipe welding flange 601, an overpressure alarm device 602, a pressure alarm device, A motor 8, a water outlet/heat conducting oil pipe 9, a waste water pipe A, a valve B and a closed flange safety valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
The efficient, safe and detachable coke oven raw gas waste heat recovery ascending pipe device shown in the figures 1 to 4 is the best embodiment of the invention. The device comprises a riser barrel 1, a sleeve type spiral coil 10, an oil-gas separation filter 14, a water inlet/heat conducting oil pipe 16, a water outlet/heat conducting oil pipe 8, a detachable oil dispersing cap 21, a fixed oil dispersing cap 22 and an overpressure alarm device 601.
A double pipe helical coil 10 is mounted inside the riser barrel 1. The sleeve-type spiral coil 10 includes a spiral coil and a jacket-type outer sleeve wrapped outside the spiral coil. The jacket is an interlayer which is formed by the outer sleeve and is arranged outside the spiral coil relative to the spiral coil. An overpressure warning device 601 is arranged inside the interlayer. The overpressure alarm 601 detects the pressure at the interlayer and gives an alarm according to the pressure setting.
The heat of the raw coke oven gas is transferred to the heat-conducting medium in the inner pipe through the interlayer of the sleeve-type spiral coil 10, and the heat-conducting medium such as water or heat-conducting oil flows in the inner pipe of the spiral coil to complete energy conversion. The spiral structure increases the heat exchange area of the raw coke oven gas and the heat conducting medium, and greatly improves the efficiency of waste heat recovery. The jacket type outer sleeve also plays a dual role in safety performance. If the raw gas is in direct contact with the spiral coil, the heat conducting medium absorbs heat, so that the temperature in the coil is too high. When the heat transfer medium is water, boiling or turning water into gas for a long time may cause tube bursting or leakage. When the heat transfer medium is heat transfer oil, the temperature of the heat transfer oil may be too high, and carbon deposit and coking are likely to be generated in the pipeline for a long time, so that tube explosion is caused. The interlayer of the jacket type outer sleeve is used as intermediate transition, air is used for heat transfer, on one hand, the heat exchange efficiency is not greatly influenced, and although a certain amount of heat loss exists, the heat loss enhances the safety of waste heat recovery.
The oil-gas separation filter 14 is installed on the left side of the riser cylinder 1 and supported by an oil-gas separation filter support 20. The oil-gas separation filter 14 divides the interior of the oil-gas separation filter 14 into the left chamber 14-1 and the right chamber 14-2 by the second filter mesh 24. A plurality of removable oil dispensing caps 21 are provided in the left chamber 14-1 and a fixed oil dispensing cap 22 is provided in the right chamber 14-2.
The oil-gas separation filter 14 is designed to be double-layered, the outer wall of the oil-gas separation filter 14 is wrapped by a jacket layer, the left inlet and the right outlet of the jacket layer are connected with a water inlet/heat conducting oil pipe 16, the outlet of the oil-gas separation filter is connected with a water outlet/heat conducting oil transition pipe 19 through a first water outlet/heat conducting oil switching elbow pipe 18, and then the oil-gas separation filter is communicated with the spiral coil pipe of the spiral coil pipe 10, so that the waste heat of the crude gas lost after separation and filtration is recovered, and the waste heat recovery efficiency is further improved.
A first filter screen 23 is arranged in the raw gas inlet pipe 13, a second filter screen 24 is arranged between the left cavity 14-1 and the right cavity 14-2 of the oil-gas separation filter 14, and a third filter screen 25 is arranged in the raw gas outlet pipe 15 of the oil-gas separation filter, so that the raw gas entering the riser barrel 1 is cleaner, the number of times of cleaning and replacing the sleeve type spiral coil pipe 10 at regular intervals is reduced, and the safety is greatly improved.
The oil-gas separation filter 14 is divided into a left chamber 14-1 and a right chamber 14-2 by a second filter screen 24, a detachable oil dispersing cap 21 is arranged in the left chamber 14-1, the detachable oil dispersing cap 21 is in a double-layer umbrella-shaped structure, and the shrinkage of the umbrella-shaped structure is controlled by a motor 602 when the detachable oil dispersing cap 21 is taken out and cleaned regularly.
The right chamber 14-2 is provided with a fixed oil dispersing cap 22 which is of an umbrella structure, and oily substances separated out due to temperature reduction of the crude gas are secondarily adsorbed, and the crude gas is relatively clean due to the fact that the detachable oil dispersing cap 21 adsorbs a large amount of oily substances at one time, so that the fixed oil dispersing cap 22 is adopted for secondary adsorption.
The left upper side of the left chamber 14-1 of the oil-gas separation filter is provided with a water inlet/heat conducting oil pipe 16, the bottom of the ascending pipe barrel 1 is provided with a water inlet/heat conducting oil pipe 16, the upper end of the ascending pipe barrel 1 is connected with a water outlet/heat conducting oil pipe 8, and the water outlet/heat conducting oil pipe 8 is communicated with the spiral coil.
Ascending pipe raw gas inlet pipe 2 is arranged on the left side of the ascending pipe barrel body 1, raw gas outlet pipe 3 is arranged on the right side of the ascending pipe barrel body, the ascending pipe raw gas inlet pipe 2 and the ascending pipe barrel body 1 are sequentially connected through flanges, and the air tightness and the safety of the connecting channel are guaranteed through a valve A.
The upper end of the sleeve type spiral coil 10 is connected with a riser cylinder through a reducing pipe welding flange 6, the lower end of the sleeve type spiral coil is connected with a riser water inlet/heat conducting oil pipe 12 through a water outlet/heat conducting oil switching elbow pipe 11, a side door 5-1 is arranged on a riser base 5, and the sleeve type spiral coil 10 can be conveniently and periodically detached for replacement or cleaning.
The left upper side of the ascending pipe cylinder body 1 is provided with a flushing hole 4 which is controlled to be opened and closed by a closed flange safety valve B. The sleeve type spiral coil 10 is convenient to regularly wash, and oily substances precipitated from the raw gas due to temperature reduction are prevented from being attached to the surface of the sleeve type spiral coil 10.
The ascending pipe barrel 1 is provided with an ascending pipe base 5, and the ascending pipe base 5 is provided with a waste water pipe 9, so that waste water for flushing the sleeve type spiral coil pipe 10 can be discharged conveniently.
The working principle of the high-efficiency, safe and detachable coke oven raw gas waste heat recovery ascending pipe device in the embodiment is as follows:
raw gas is firstly discharged into an oil-gas separation filter 14 through a raw gas inlet pipe 13, large particles carried in the gas are filtered through a first filter screen 23, the temperature of the raw gas and oily substances separated out due to the temperature reduction can be greatly reduced under the action of a detachable oil dispersion cap 21 of a left cavity 14-1 of the oil-gas separation filter 14, the raw gas entering into a right cavity 14-2 of the oil-gas separation filter 14 is enabled to be clean to a great extent through the filtration of a second filter screen 24, the oily substances are further absorbed under the action of a fixed oil dispersion cap 22, and finally the raw gas is discharged into a raw gas inlet pipe 2 of an ascending pipe under the triple filtration action of a third filter screen 25, the raw gas flows in the horizontal direction of a jacketed outer pipe of a telescopic spiral coil 10 in an ascending pipe barrel 1, so that the heat exchange area with a heat-conducting medium is greatly increased, and heat is transferred to the heat-conducting medium in the spiral coil through an interlayer of the telescopic spiral coil 10, heat-conducting media such as water or heat-conducting oil flow in the spiral coil pipe, so that waste heat recovery is realized. When the inner pipe is damaged, the heat-conducting medium in the pipe firstly leaks into the interlayer, the overpressure alarm device 601 is arranged in the interlayer, when the heat-conducting medium leaks, the pressure naturally rises to cause alarm, and the safety of the whole ascending pipe device is ensured. When a jacketed outer pipe, namely an interlayer, of the telescopic spiral coil 10 is damaged, the space in the interlayer is communicated with the raw coke oven gas in the ascending pipe cylinder 1, the interlayer pressure is naturally reduced, and the overpressure alarm device 601 gives an alarm.
Meanwhile, the jacket layer of the oil-gas separation filter 14 is communicated with the interlayer of the sleeve-type spiral disk 10 through the oil-gas separation filter water-outlet heat-conducting oil transition pipe 19, so that the heat lost when the raw coke oven gas is separated and filtered by the oil-gas separation filter 14 can be further recovered. Finally, the crude gas with reduced temperature and high cleanness is discharged from the crude gas outlet pipe 3 at the upper right side of the riser cylinder 1, and heat-conducting media such as water or heat-conducting oil after absorbing heat are discharged from the water outlet/heat-conducting oil pipe 8 to supply heat to heat-using equipment.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a high-efficient safe detachable coke oven raw coke oven gas waste heat recovery tedge device which characterized in that: comprises an oil-gas separation filter (14) and a waste heat collecting device;
the inner cavity of the oil-gas separation filter (14) is respectively provided with an air inlet and an air outlet, the air inlet of the oil-gas separation filter (14) is connected with a crude gas inlet pipe (13), the air outlet of the oil-gas separation filter is connected with a riser crude gas inlet pipe (2), the other end of the riser crude gas inlet pipe (2) is communicated with a waste heat collecting device, the outer wall of the oil-gas separation filter (14) is wrapped with a jacket layer and is connected with a water inlet/heat conducting oil pipe (16), and a water outlet/heat conducting oil transition pipe (19) of the oil-gas separation filter is connected out;
the waste heat collecting device comprises a riser cylinder (1) and a sleeve type spiral coil (10), the sleeve type spiral coil (10) is arranged in the riser cylinder (1), one end of a riser raw gas inlet pipe (2) is connected with a gas outlet of an oil-gas separation filter (14), the other end of the riser raw gas inlet pipe is communicated into the riser cylinder (1), and a raw gas outlet pipe (3) is connected to the riser cylinder (1);
the sleeve type spiral coil (10) comprises a water outlet/heat conducting oil pipe (8) and a jacket type outer sleeve, wherein an inlet of the water outlet/heat conducting oil pipe (8) is communicated with an outlet of a water outlet/heat conducting oil transition pipe (19) of the oil-gas separation filter, an outlet of the water outlet/heat conducting oil pipe (8) extends out of the ascending pipe cylinder body (1), the section of the water outlet/heat conducting oil pipe (8) corresponding to the inside of the ascending pipe cylinder body (1) is a spiral coil, and the jacket type outer sleeve is correspondingly wrapped outside the spiral coil;
an overpressure alarm device (601) for detecting pressure change is arranged in the jacket type outer sleeve.
2. The high-efficiency safe detachable coke oven crude gas waste heat recovery ascending pipe device of claim 1, which is characterized in that: a first filter screen (23) is arranged in the raw gas inlet pipe (13); a second filter screen (24) is arranged in an inner cavity of the oil-gas separation filter (14), and the inner cavity is divided into a left cavity (14-1) and a right cavity (14-2) by the second filter screen (24).
3. The high-efficiency safe detachable coke oven crude gas waste heat recovery ascending pipe device of claim 2, which is characterized in that: a support rod is arranged in the left chamber (14-1), a plurality of detachable oil dispersing caps (21) are sequentially and movably arranged on the support rod along the oil-gas movement direction, and a motor (602) for driving the detachable oil dispersing caps (21) to open and contract is further arranged on the oil-gas separation filter (14); a fixed oil dispersing cap (22) is arranged in the right chamber (14-2).
4. The high-efficiency safe detachable coke oven crude gas waste heat recovery ascending pipe device as claimed in claim 1, characterized in that: and a third filter screen (25) and a valve (A) are sequentially arranged on the riser raw gas inlet pipe (2).
5. The high-efficiency safe detachable coke oven crude gas waste heat recovery ascending pipe device of claim 1, which is characterized in that: the side wall of the top of the ascending pipe cylinder body (1) is provided with a flushing hole (4), the opening and closing of the flushing hole (4) are controlled by a closed flange safety valve (B), and the bottom of the ascending pipe cylinder body (1) is connected with a waste water pipe (9).
6. The efficient and safe device as claimed in claim 5, further comprising a removable coke oven crude gas waste heat recovery riser device, wherein: the improved sewage treatment device is characterized in that an ascending pipe base (5) is arranged at the bottom of the ascending pipe cylinder body (1), a side door (5-1) is arranged on the ascending pipe base (5), wastewater in the ascending pipe cylinder body (1) falls into the ascending pipe base (5), and a wastewater pipe (9) is connected out from the bottom of the ascending pipe base (5).
7. The efficient and safe device as claimed in claim 5, further comprising a removable coke oven crude gas waste heat recovery riser device, wherein: the top of the ascending pipe cylinder body (1) is provided with a reducing pipe welding flange (6), and the top of the ascending pipe cylinder body (1) is matched with a water outlet/heat conducting oil pipe (8) through the reducing pipe welding flange (6) to be connected out.
8. The efficient and safe riser device for recovering the waste heat of the raw gas of the detachable coke oven according to claim 1, wherein: the bottom of the oil-gas separation filter (14) is provided with an oil-gas separation filter (14) bracket which is arranged outside the jacket layer.
9. The efficient and safe riser device for recovering the waste heat of the raw gas of the detachable coke oven according to claim 1, wherein: the jacket layer of the oil-gas separation filter (14) is connected with a first water outlet/heat transfer oil switching elbow (18) and is connected with a water outlet/heat transfer oil transition pipe (19) of the oil-gas separation filter through the first water outlet/heat transfer oil switching elbow (18), and the water outlet/heat transfer oil transition pipe (19) of the oil-gas separation filter is connected with a water outlet/heat transfer oil pipe (8) through a second water outlet/heat transfer oil switching elbow (11).
10. The efficient and safe riser device for recovering the waste heat of the raw gas of the detachable coke oven according to claim 1, wherein: the water inlet/heat conducting oil pipe (16) is connected with the jacket layer of the oil-gas separation filter (14) through a water inlet/heat conducting oil switching elbow (17).
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| CN202210359726.9A CN114806607B (en) | 2022-04-07 | 2022-04-07 | High-efficient safe detachable coke oven crude gas waste heat recovery tedge device |
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| CN114806607B CN114806607B (en) | 2023-03-21 |
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| CN114806607B (en) | 2023-03-21 |
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