CN205473564U - Tube bundle waste heat recovery system of anti stick raw coke oven gas - Google Patents
Tube bundle waste heat recovery system of anti stick raw coke oven gas Download PDFInfo
- Publication number
- CN205473564U CN205473564U CN201620180202.3U CN201620180202U CN205473564U CN 205473564 U CN205473564 U CN 205473564U CN 201620180202 U CN201620180202 U CN 201620180202U CN 205473564 U CN205473564 U CN 205473564U
- Authority
- CN
- China
- Prior art keywords
- tube
- heat
- heat exchange
- coke oven
- oven gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
Abstract
The utility model discloses a tube bundle waste heat recovery system of anti stick raw coke oven gas belongs to coking process raw coke oven gas waste heat recovery and utilizes technical field. The utility model discloses a tedge, tube bank heat transfer device and heterotypic connecting pipe, the vertical tedge that upwards is equipped with in top of tedge extends the section, and this tedge extends the section through tube bank heat transfer device and heterotypic connecting pipe intercommunication, be not equipped with any heat transfer device in the tedge, tube bank heat transfer device includes a plurality of mutual parallel arrangement's single subassembly. Tube bank heat transfer device still includes adiabatic box, and the entry of adiabatic box is located the side of this thermal insulation box, and the export of adiabatic box is located the bottom surface of this thermal insulation box, and is connected through the bottom heat -insulating shield of slope setting between the export of the entry of adiabatic box and adiabatic box, and just this bottom heat -insulating shield detachably fixes the bottom surface at adiabatic box. The utility model discloses can be safer, economy, high -efficient the raw coke oven gas residual heat resources of retrieving.
Description
Technical field
This utility model belongs to coking process raw coke oven gas heat recovery technical field, more particularly, it relates to the bundled tube residual neat recovering system of a kind of anti stick raw coke oven gas.
Background technology
At present, the sensible heat that coal oven dithio-gas (650～750 DEG C) is taken away accounts for the 36% of coking heating load, the condensation ammonia absorption that a large amount of sensible heats are sprayed by bridge tube, raw gas temperature enters gas recovery cleaning system after dropping to 80～90 DEG C, not only consumes a large amount of ammonia, increase system dynamic consumption, deteriorate coking technique environment, and the sensible heat of raw coke oven gas fails to recycle, and causes energy waste, increase coking chemical waste water generation amount and treating capacity, increase environmental pollution and processing cost.Therefore one of study hotspot of coal oven dithio-gas Exposure degree research always coking industry energy-saving and emission-reduction.
In prior art, disclosing a kind of method and device reclaiming waste heat of coke oven crude gas in the Chinese patent application of Application No. 2010101998799, this device uses semiconductor module power generation mode, absorbs the heat of raw coke oven gas in tedge.But, temperature that the generating of the semiconductor module of this device can bear and the thermal Finite of absorption, cause the heat of raw coke oven gas not to be fully used.The Chinese patent application of Application No. 2009102308213 discloses a kind of residual heat utilizing technology of coke oven crude gas, coke oven is collected entrance residual heat boiler for exchanging heat at the high temperature raw coke oven gas of each carbonizing chamber by this technology, raw coke oven gas after heat exchange, after ammonia spray is lowered the temperature, sends recovery system back to.This system, by concentrating heat exchange to take heat, has higher efficiency, but there is potential safety hazard by residual heat boiler for exchanging heat, if whole system is poorly sealed close, the most easily causes too high oxygen level in system, causes blast.
In general, waste heat of coke oven crude gas reclaims currently mainly two kinds of research modes: (1) one is installation heat-exchanger rig at tedge, heat transferring medium is used to absorb the waste heat of raw coke oven gas, this heat exchange mode reduces the temperature of raw coke oven gas, the condensation of the component such as easily cause raw coke oven gas coal-tar middle oil, thus cause the blocking of tedge；It is more importantly, it it is i.e. the carbonization chamber of high temperature below tedge, the heat-exchanger rig installed at tedge in prior art is generally using the fluid such as water, steam as heat transferring medium, once occurs leakage will necessarily affect coke oven and produces, thus causes the probability of happening of production accident significantly to rise；(2) two is to use to concentrate raw coke oven gas to draw, the residual neat recovering system of concentration is additionally set, such as waste heat boiler technology, this kind of structural models is due to factors such as its system complex, the combustibility of raw coke oven gas, tar precipitation cokings, the air-tightness causing system requires the highest, system safety operation is subject to the biggest challenge, simultaneously because coking cycles difference is big, there is the problems such as control pressurer system is complicated, technical equipment requires height and investment greatly, cause centralized recovery raw coke oven gas waste heat technology not have successful business to apply.
nullAlso it has been proposed that arrange heat-exchanger rig in bridge tube in prior art，Absorb the technology of raw coke oven gas waste heat further，Such as Chinese Patent Application No. is 201210317957X，Filing date on August 31st, 2012，Invention and created name is: a kind of combination type waste heat of coke oven crude gas reclaims the system and method for superheated steam，In the tedge of coke oven, superheater is set，Vaporizer is set in bridge tube，And bridge tube is connected with tedge，Vaporizer is connected with drum by pipeline，Drum is connected with superheater by pipeline，Water separator is set in drum，Water forms steam water interface through vaporizer and enters drum，Steam water interface is separated into water and saturated vapor by water separator in drum，Saturated vapor becomes superheated steam after superheater heat exchange，Vaporizer、Drum、Superheater sequentially forms steam circulation passage.The raw coke oven gas that coke oven produces sequentially forms raw coke oven gas circulation passage through tedge, bridge tube.But, this application case is disadvantageous in that: the tedge superheater in (1) this application case exists the potential safety hazards such as dry pot explosion, this is also to apply unsuccessfully the 1970s and 1980s in last century " coke oven coke oven uprising tube gasification refrigerating mechanism ", causes the main cause of ascending tube crude-gas heat recovery technology development stagnation；Arranging superheater, the once leakage of the heat transferring medium in superheater in tedge, will necessarily affect coke oven and produce, the probability of happening causing production accident is higher；(2) rational solution is not provided for the tar condensing coking problem produced after bridge tube heat exchange, more importantly, the space structure at bridge tube is narrow and small, and heating surface is arranged and is affected, cannot fully reclaim raw coke oven gas residual heat resources, cause being difficult to promote.
In sum, how to overcome existing waste heat of coke oven crude gas recovery technology all deficiencies in practice, safer, economical, reclaim raw coke oven gas residual heat resources efficiently, it is the technical barrier needing solution in prior art badly.
Utility model content
1. utility model to solve the technical problem that
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, it is provided that the bundled tube residual neat recovering system of a kind of anti stick raw coke oven gas, it is possible to safer, economical, efficiently reclaim raw coke oven gas residual heat resources.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that this utility model provides is:
The bundled tube residual neat recovering system of anti stick raw coke oven gas of the present utility model, including tedge, also including restraining heat-exchanger rig and special-shaped connecting tube, the top of described tedge is provided with tedge extension straight up, and this tedge extension is connected with special-shaped connecting tube by tube bank heat-exchanger rig；
Any heat-exchanger rig it is not provided with in described tedge；Described tube bank heat-exchanger rig includes multiple single assembly arranged in parallel.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, described tube bank heat-exchanger rig also includes body of thermal insulating box, the entrance of body of thermal insulating box is positioned at the side of this body of thermal insulating box, the outlet of body of thermal insulating box is positioned at the bottom surface of this body of thermal insulating box, and the bottom heat-insulating shield passing through between the entrance of body of thermal insulating box and the outlet of body of thermal insulating box to be obliquely installed is connected, and bottom this, heat-insulating shield is removably attached to the bottom surface of body of thermal insulating box.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, single assembly includes heat exchange transverse tube, lower heat exchange inclined tube, lower heat exchange transverse tube and heat exchange vertical tube, the two-port of described upper heat exchange transverse tube seals, and upper heat exchange transverse tube is positioned at the inwall at body of thermal insulating box top；Described lower heat exchange inclined tube is positioned on the heat-insulating shield of bottom, and lower heat exchange transverse tube is positioned at the top of body of thermal insulating box outlet, and it is an overall heat exchange pipe that lower heat exchange inclined tube connects with lower heat exchange transverse tube, and the two-port of this overall heat exchange pipe seals；Multiple heat exchange vertical tubes being vertically arranged equidistantly are arranged in a row, and the upper port of the heat exchange vertical tube being arranged in a row is respectively communicated with on upper heat exchange transverse tube side, and the lower port of the heat exchange vertical tube being arranged in a row is respectively communicated with on described overall heat exchange tube side face.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, the side of described tedge extension is connected with the entrance of body of thermal insulating box by horizontally disposed connecting tube, and the outlet of body of thermal insulating box is connected by the entrance of lower adpting flange with special-shaped connecting tube.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, described connecting tube is divided into two sections, one section of connecting tube connects with the side of tedge extension, another section of connecting tube connects with the entrance of body of thermal insulating box, is connected by upper adpting flange between two sections of connecting tube；The outer surface of connecting tube is enclosed with heat-insulation layer.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, heat exchange vertical tube on all single assemblies is divided into edge heat exchange vertical tube and internal heat vertical tube, described edge heat exchange vertical tube and the contact internal walls of body of thermal insulating box, adjacent two edge heat exchange vertical tubes contact；Described internal heat vertical tube is positioned at the space that edge heat exchange vertical tube surrounds, and does not contacts between adjacent two internal heat vertical tubes.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, and the end of each lower heat exchange inclined tube all connects a water inlet pipe, all of water inlet pipe and a water inlet manifold connection；The end of each upper heat exchange transverse tube all connects a vapour-discharge tube, and all of vapour-discharge tube all connects with a drum.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, and the inwall of the outer wall of single assembly, the inwall of body of thermal insulating box, the inwall of bottom heat-insulating shield and special-shaped connecting tube all scribbles non-sticking lining.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, it is provided with high pressure aqua ammonia nozzle, low-pressure ammonia (operating) water nozzle and peep-hole in described special-shaped connecting tube, the underface of described high pressure aqua ammonia nozzle is the outlet of special-shaped connecting tube, the outlet of special-shaped connecting tube relative to the outlet distance tedge of body of thermal insulating box horizontal range closer to, the central point in special-shaped connecting tube exit is C point, the central point in body of thermal insulating box exit is B point, and B point, the line of C point and the angle of vertical line are 15～45 °.
Bundled tube residual neat recovering system as anti stick raw coke oven gas of the present utility model further improves, and described bottom heat-insulating shield and horizontal angle are 20～45 °.
3. beneficial effect
Use the technical scheme that this utility model provides, compared with prior art, there is following remarkable result:
(1) the bundled tube residual neat recovering system of anti stick raw coke oven gas of the present utility model, take full advantage of the high-quality waste heat of raw coke oven gas, after waste heat recovery, the temperature of raw coke oven gas is reduced to 240～280 DEG C, only reclaim the high temperature sensible heat of raw coke oven gas 480～more than 500 DEG C compared to tedge waste heat reclaiming process in prior art for, sensible heat and the latent heat of raw coke oven gas are reclaimed more, and propose the solution reclaiming the tar condensing coking problem that raw coke oven gas latent heat is caused, fundamentally achieve safety, economy, the target of high efficiente callback raw coke oven gas waste heat.
(2) in this utility model, the extended line of the extended line of body of thermal insulating box entrance and body of thermal insulating box outlet forms the raw coke oven gas circulation passage of " ┓ " shape in body of thermal insulating box 10, wherein, bottom heat-insulating shield 16 and horizontal angle are 20～45 °, and bottom heat-insulating shield and body of thermal insulating box inwall collectively define concrete " ┓ " shape raw coke oven gas circulation passage；Multiple single assemblies being parallel to each other are equipped with in above-mentioned " ┓ " shape raw coke oven gas circulation passage and carry out abundant heat exchange, raw coke oven gas can occur a certain degree of bending break-in when flowing in " ┓ " shape circulation passage, on the one hand be conducive to regulating the flow regime of raw coke oven gas, improve the heat transfer intensity between raw coke oven gas and single assembly, be on the other hand conducive to the tar liquid condensed to collect in the exit of body of thermal insulating box.
(3) in this utility model, edge heat exchange vertical tube and the contact internal walls of body of thermal insulating box, the inwall of body of thermal insulating box is formed and seals body of wall, flow in raw coke oven gas is limited in the space that edge heat exchange vertical tube surrounds, prevent tar to be bonded on the inwall of body of thermal insulating box, also can play the effect reclaiming raw coke oven gas waste heat；Internal heat vertical tube is positioned at the space that edge heat exchange vertical tube surrounds, and is conducive to being fully contacted with raw coke oven gas, improves the heat transfer intensity between raw coke oven gas and internal heat vertical tube；Do not contact between adjacent two internal heat vertical tubes, between internal heat vertical tube, form raw coke oven gas circulation passage so that raw coke oven gas carries out heat exchange with internal heat vertical tube in flowing.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the bundled tube residual neat recovering system of the anti stick raw coke oven gas of embodiment 1；
Fig. 2 be in Fig. 1 restrain heat-exchanger rig along A-A to sectional structure schematic diagram；
Fig. 3 is the structural representation restraining the single assembly outside heat-exchanger rig in embodiment 1；
Fig. 4 is the structural representation restraining the single assembly in the middle of heat-exchanger rig in embodiment 1.
Label declaration in schematic diagram:
1, tedge；101, tedge extension；2, tube bank heat-exchanger rig；201, upper heat exchange transverse tube；202, lower heat exchange inclined tube；203, lower heat exchange transverse tube；204, heat exchange vertical tube；3, special-shaped connecting tube；4, upper adpting flange；5, lower adpting flange；6, connecting tube；7, heat-insulation layer；8, water inlet pipe；9, vapour-discharge tube；10, body of thermal insulating box；11, high pressure aqua ammonia nozzle；12, peep-hole；13, low-pressure ammonia (operating) water nozzle；14, drum；15, water inlet manifold；16, bottom heat-insulating shield.
Detailed description of the invention
For further appreciating that content of the present utility model, in conjunction with the accompanying drawings and embodiments this utility model is described in detail.
Embodiment 1
In conjunction with Fig. 1～4, the bundled tube residual neat recovering system of the anti stick raw coke oven gas of the present embodiment, including tedge 1, tube bank heat-exchanger rig 2 and special-shaped connecting tube 3, the top of tedge 1 is provided with tedge extension 101 straight up, this tedge extension 101 is connected with special-shaped connecting tube 3 by tube bank heat-exchanger rig 2, is not provided with any heat-exchanger rig in tedge 1；Tube bank heat-exchanger rig 2 includes multiple single assembly arranged in parallel.
Concrete, tube bank heat-exchanger rig 2 also includes body of thermal insulating box 10, the entrance of body of thermal insulating box 10 is positioned at the side of this body of thermal insulating box 10, the outlet of body of thermal insulating box 10 is positioned at the bottom surface of this body of thermal insulating box 10, and the bottom heat-insulating shield 16 passing through between the entrance of body of thermal insulating box 10 and the outlet of body of thermal insulating box 10 to be obliquely installed is connected, and bottom this, heat-insulating shield 16 is removably attached to the bottom surface of body of thermal insulating box 10.Wherein, bottom heat-insulating shield 16 and horizontal angle are 20～45 ° (taking 20 ° in this enforcement), and being designed as by bottom heat-insulating shield 16 with horizontal line is 20 ° of angles, it is possible to ensure that tar drop is the dirtiest on the inwall of bottom heat-insulating shield 16；Single assembly includes heat exchange transverse tube 201, lower heat exchange inclined tube 202, lower heat exchange transverse tube 203 and heat exchange vertical tube 204, and the two-port of upper heat exchange transverse tube 201 seals, and upper heat exchange transverse tube 201 is positioned at the inwall at body of thermal insulating box 10 top；Lower heat exchange inclined tube 202 is positioned on the heat-insulating shield 16 of bottom, and lower heat exchange transverse tube 203 is positioned at the top of body of thermal insulating box 10 outlet, and it is an overall heat exchange pipe that lower heat exchange inclined tube 202 connects with lower heat exchange transverse tube 203, and the two-port of this overall heat exchange pipe seals；Multiple heat exchange vertical tubes 204 being vertically arranged equidistantly are arranged in a row, the upper port of the heat exchange vertical tube 204 being arranged in a row is respectively communicated with on upper heat exchange transverse tube 201 side, and the lower port of the heat exchange vertical tube 204 being arranged in a row is respectively communicated with on overall heat exchange tube side face.Wherein, the end of each lower heat exchange inclined tube 202 all connects a water inlet pipe 8, and all of water inlet pipe 8 connects with a water inlet manifold 15；The end of each upper heat exchange transverse tube 201 all connects a vapour-discharge tube 9, and all of vapour-discharge tube 9 all connects with a drum 14.
The side of tedge extension 101 is connected with the entrance of body of thermal insulating box 10 by horizontally disposed connecting tube 6, the outlet of body of thermal insulating box 10 is connected by the entrance of lower adpting flange 5 with special-shaped connecting tube 3, above-mentioned design achieves the modularized design of local device, beneficially processing and manufacturing.Connecting tube 6 is divided into two sections, one section of connecting tube 6 connects with the side of tedge extension 101, another section of connecting tube 6 connects with the entrance of body of thermal insulating box 10, connected by upper adpting flange 4 between two sections of connecting tube 6, wherein, connecting tube 6 is divided into the design of two sections, can will be attached between tedge extension 101 and body of thermal insulating box 10 easily and flexibly, the entrance of body of thermal insulating box 10 and the outlet of body of thermal insulating box 10 are connected with other parts by upper adpting flange 4 and lower adpting flange 5 respectively, make individually body of thermal insulating box 10 to be carried out modularized design, it is easy to the installation and removal of body of thermal insulating box 10；The outer surface of connecting tube 6 is enclosed with heat-insulation layer 7, plays the effect of raw coke oven gas insulation internal to connecting tube 6.
In the present embodiment, the heat exchange vertical tube 204 on all single assemblies is divided into the contact internal walls of edge heat exchange vertical tube and internal heat vertical tube, edge heat exchange vertical tube and body of thermal insulating box 10, and adjacent two edge heat exchange vertical tubes contact；Internal heat vertical tube is positioned at the space that edge heat exchange vertical tube surrounds, and does not contacts between adjacent two internal heat vertical tubes.With reference to Fig. 2～4, edge heat exchange vertical tube and the contact internal walls of body of thermal insulating box 10, the inwall of body of thermal insulating box 10 is formed and seals body of wall, flow in raw coke oven gas is limited in the space that edge heat exchange vertical tube surrounds, prevent tar to be bonded on the inwall of body of thermal insulating box 10, also can play the effect reclaiming raw coke oven gas waste heat；Internal heat vertical tube is positioned at the space that edge heat exchange vertical tube surrounds, and is conducive to being fully contacted with raw coke oven gas, improves the heat transfer intensity between raw coke oven gas and internal heat vertical tube；Do not contact between adjacent two internal heat vertical tubes so that between internal heat vertical tube, form raw coke oven gas free air space, it is simple to raw coke oven gas carries out heat exchange with internal heat vertical tube in flowing.
The inwall of the outer wall of single assembly, the inwall of body of thermal insulating box 10, the inwall of bottom heat-insulating shield 16 and special-shaped connecting tube 3 all scribbles non-sticking lining.Non-viscous paint, i.e. Shenzhen present on this non-sticking lining system market along easily produce for development in science and technology company limited provide can beautiful multi-product board water nano ceramic coating, including bed material and fabric.The non-sticking lining used in the present embodiment belongs to non-infiltration non-sticking lining, use the non-sticking lining in the present embodiment the bonding of tar and coking phenomenon can be played significant inhibitory action, i.e. the tar of this non-sticking lining surface condensation can on non-sticking lining smooth flow, so tar is not the most easily formed bonding, blocking, and avoid the raw coke oven gas condensate corrosion phenomenon to walls such as single assembly, bottom heat-insulating shields 16, improve the service life of tube bank heat-exchanger rig 2.It should be noted that; owing to being respectively connected with water inlet pipe 8 on each single assembly; thus it is full of enough heat-exchange working mediums all the time in ensureing the most single assembly; thus the temperature of single assembly is maintained all the time relatively low temperature value (less than 200 DEG C); can protect the non-sticking lining of single assembly outer wall well, this is also the precondition that this non-sticking lining can be directly applied on single assembly；When the temperature of single assembly outer wall is too high, non-sticking lining is the most easily damaged and is come off, and service life is the shortest, it is difficult to meet the needs of practical application in industry.
It is provided with high pressure aqua ammonia nozzle 11, low-pressure ammonia (operating) water nozzle 13 and peep-hole 12 in special-shaped connecting tube 3, the underface of high pressure aqua ammonia nozzle 11 is the outlet of special-shaped connecting tube 3, the outlet of special-shaped connecting tube 3 relative to the outlet distance tedge 1 of body of thermal insulating box 10 horizontal range closer to, the central point in special-shaped connecting tube 3 exit is C point, the central point in body of thermal insulating box 10 exit is B point, B point, the line of C point and the angle of vertical line are 15～45 ° (taking 15 ° in concrete the present embodiment), and the outlet of special-shaped connecting tube 3 is connected with discharge.Wherein, B point, the line of C point are set to 15 ° with the angle of vertical line, on the one hand special-shaped connecting tube 3 entirety upwards direction, riser 1 place is made to tilt to install, (when the line of B point, C point is excessive with the angle of vertical line, special-shaped connecting tube 3 cannot stably support tube bank heat-exchanger rig 2 to effectively utilize space on the premise of stable support tube bank heat-exchanger rig 2；When the line of B point, C point is too small with the angle of vertical line, the utilization ratio in space just ratio is relatively low)；On the other hand the tar collected on special-shaped connecting tube 3 inwall is made can to flow down gently along the inwall of special-shaped connecting tube 3.Wherein, the raw coke oven gas in special-shaped connecting tube 3 can be played further cooling effect by high pressure aqua ammonia nozzle 11 and low-pressure ammonia (operating) water nozzle 13, and the spray of ammonia also produces certain impetus by flowing raw coke oven gas, it is ensured that the smoothness of raw coke oven gas flowing.
The bundled tube residual neat recovering system of the anti stick raw coke oven gas of the present embodiment, its operation principle is: the raw coke oven gas of 650～750 DEG C first passes through the tedge extension 101 entrance tube bank heat-exchanger rig 2 that tedge 1 top is arranged straight up, tube bank heat-exchanger rig 2 forms raw coke oven gas free air space between internal heat vertical tube, heat-exchange working medium in single assembly is heated vaporization by heat convection and heat conduction by raw coke oven gas, drum is entered along vapour-discharge tube 9 after working medium vaporization, by with the steam water interface generation boiling heat transfer in drum after, produce the steam of 180～200 DEG C, enter back into pipe network, in single assembly, heat-exchange working medium is concentrated supplementary by water inlet manifold 15；650～750 DEG C of raw coke oven gas drop to 240～280 DEG C after tube bank heat-exchanger rig 2, then enter discharge by spraying into after ammonia cooling processes in special-shaped connecting tube 3.In heat exchange temperature-fall period, tar in raw coke oven gas separates out and forms tar drop on non-sticking lining surface, the inwall of heat-insulating shield 16 bottom flowing under gravity, collected by the special-shaped connecting tube 3 of definite shape again and flow to discharge, owing to the inwall of outer wall, the inwall of body of thermal insulating box 10, the inwall of bottom heat-insulating shield 16 and the special-shaped connecting tube 3 of single assembly all scribbles non-sticking lining, so the tar felt jam of condensation can be effectively prevented, the component such as tar that also can effectively reclaim condensation.
The bundled tube residual neat recovering system of the anti stick raw coke oven gas of the present embodiment, take full advantage of the high-quality waste heat of raw coke oven gas, after waste heat recovery, the temperature of raw coke oven gas is reduced to 240～280 DEG C, only reclaim the high temperature sensible heat of raw coke oven gas 480～more than 500 DEG C compared to tedge waste heat reclaiming process in prior art for, sensible heat and the latent heat of raw coke oven gas are reclaimed more, and propose the solution reclaiming the tar condensing coking problem that raw coke oven gas latent heat is caused, fundamentally achieve safety, economy, the target of high efficiente callback raw coke oven gas waste heat.
Sum up existing waste heat of coke oven crude gas recovery technology, be broadly divided into three types:
The first is installation heat-exchanger rig in tedge, owing to below tedge being i.e. the carbonization chamber of high temperature, any little fault occurs in tedge, all can directly interfere with carbonization chamber, have a strong impact on seriality and the safety of coke production；Therefore, when those skilled in the art's research installs heat-exchanger rig in tedge, its main starting point and focus are how to improve further the safety of device, to adapt to the demand of actual industrial production, but due to the restriction (i.e. directly connecting with carbonization chamber) of tedge present position, this problem is never well solved.
The second is to concentrate raw coke oven gas to draw, the residual neat recovering system of concentration is additionally set, although this method possible in theory, but there is system complex in the residual neat recovering system additionally arranging concentration, technical equipment requires the problems such as high and investment is big, being difficult to successful business application, i.e. actual application is uneconomical always.
The third is to arrange heat-exchanger rig in bridge tube, but in actual production, bridge tube is only to connect the segment pipe between tedge and discharge, space structure at bridge tube is narrow and small, heating surface is arranged and is affected, cannot fully reclaim raw coke oven gas residual heat resources, cause being difficult to promote, i.e. waste heat recovery is inefficient.
Those skilled in the art is studying waste heat of coke oven crude gas recovery technology when, it is all to carry out along the direction of above-mentioned three types, and the waste heat of coke oven crude gas recovery technology of above-mentioned three types, all there is the technological deficiency being difficult to overcome, therefore, how to break through above-mentioned technological deficiency, safer, economical, reclaim raw coke oven gas residual heat resources efficiently, it is the technical barrier needing solution in prior art badly.
In the present embodiment, the top of tedge 1 is provided with tedge extension 101 straight up, and this tedge extension 101 is connected with special-shaped connecting tube 3 by tube bank heat-exchanger rig 2, is not provided with any heat-exchanger rig in tedge 1；Wherein, in tedge 1, it is not provided with any heat-exchanger rig, obviates the Research Thinking installing heat-exchanger rig in prior art at tedge completely, so that the safety of device obtains Reliable guarantee；Due in the present embodiment, any heat-exchanger rig it is not provided with in tedge 1, therefore, reclaim raw coke oven gas waste heat task mainly by tube bank heat-exchanger rig 2 undertake, this raw coke oven gas is drawn from tedge extension 101 and directly with tube bank heat-exchanger rig 2 recovery waste heat system, it is possible to reclaim raw coke oven gas high-quality heat, take hot temperature range to strengthen, it is not limited only to reclaim the high temperature sensible heat of raw coke oven gas more than 480 DEG C, and heat recovery efficiency height, is computed can reach about 70%；This system can reduce the usage amount of ammonia in a large number simultaneously, has saved resource and the energy.Meanwhile, the top of tedge 1 is provided with tedge extension 101 straight up, enough installing spaces reserved by the tube bank heat-exchanger rig 2 that is set to of tedge extension 101, make to restrain heat-exchanger rig 2 and be different from the bridge tube that space structure is narrow and small, this tube bank heat-exchanger rig 2 can fully reclaim raw coke oven gas residual heat resources, and waste heat recovery efficiency is higher；And the coal oven dithio-gas after UTILIZATION OF VESIDUAL HEAT IN comes back to original discharge by the outlet of special-shaped connecting tube 3, does not affect the structure of original tedge, discharge.It should be noted that, those skilled in the art is under the guide of prior art, heat-exchanger rig is installed in tedge and reclaims raw coke oven gas residual heat resources, heat-exchanger rig is set in bridge tube to reclaim raw coke oven gas residual heat resources, but all there is the technological deficiency being difficult to overcome in above two method, and the bundled tube residual neat recovering system of the anti stick raw coke oven gas of the present embodiment, break usual thinking of the prior art, on the top of tedge 1, tedge extension 101 is set straight up, overcome and focus is confined to tedge 1 inside and the technology prejudice within bridge tube by prior art, the installation being set to restrain heat-exchanger rig 2 of tedge extension 101 provides possibility.
In the present embodiment, the entrance of body of thermal insulating box 10 is positioned at the side of this body of thermal insulating box 10, the outlet of body of thermal insulating box 10 is positioned at the bottom surface of this body of thermal insulating box 10, and the bottom heat-insulating shield 16 passing through between the entrance of body of thermal insulating box 10 and the outlet of body of thermal insulating box 10 to be obliquely installed is connected, and bottom this, heat-insulating shield 16 is removably attached to the bottom surface of body of thermal insulating box 10；Wherein, between the entrance of body of thermal insulating box 10 and the outlet of body of thermal insulating box 10, the bottom heat-insulating shield 16 by being obliquely installed is connected, the material such as tar being easy to body of thermal insulating box 10 internal condensation confluxes into special-shaped connecting tube 3 along the bottom heat-insulating shield 16 being obliquely installed automatically, is finally collected recycling in special-shaped connecting tube 3 exit；Wherein, bottom heat-insulating shield 16 is removably attached to the bottom surface of body of thermal insulating box 10, it is simple to periodically removed by bottom heat-insulating shield 16, is carried out bottom heat-insulating shield 16 and body of thermal insulating box 10 are internal.
In the present embodiment, the extended line of the extended line of body of thermal insulating box 10 entrance and body of thermal insulating box 10 outlet forms the raw coke oven gas circulation passage of " ┓ " shape in body of thermal insulating box 10, wherein, bottom heat-insulating shield 16 and horizontal angle are that 20～45 ° (taking 20 ° in this enforcement), bottom heat-insulating shield 16 and body of thermal insulating box 10 inwall collectively define concrete " ┓ " shape raw coke oven gas circulation passage；nullSingle assembly includes heat exchange transverse tube 201、Lower heat exchange inclined tube 202、Lower heat exchange transverse tube 203 and heat exchange vertical tube 204，Upper heat exchange transverse tube 201 is positioned at the inwall at body of thermal insulating box 10 top，Lower heat exchange inclined tube 202 is positioned on the heat-insulating shield 16 of bottom，Lower heat exchange transverse tube 203 is positioned at the top of body of thermal insulating box 10 outlet，It is an overall heat exchange pipe that lower heat exchange inclined tube 202 connects with lower heat exchange transverse tube 203，Multiple heat exchange vertical tubes 204 being vertically arranged equidistantly are arranged in a row，The upper port of the heat exchange vertical tube 204 being arranged in a row is respectively communicated with on upper heat exchange transverse tube 201 side，The lower port of the heat exchange vertical tube 204 being arranged in a row is respectively communicated with on overall heat exchange tube side face，Multiple single assemblies being parallel to each other are equipped with in above-mentioned " ┓ " shape raw coke oven gas circulation passage and carry out abundant heat exchange，Raw coke oven gas can occur a certain degree of bending break-in when flowing in " ┓ " shape circulation passage，On the one hand be conducive to regulating the flow regime of raw coke oven gas，Improve the heat transfer intensity between raw coke oven gas and single assembly，On the other hand the tar liquid condensed is conducive to collect in the exit of body of thermal insulating box 10.
Embodiment 2
The bundled tube residual neat recovering system of the anti stick raw coke oven gas of the present embodiment, its basic structure is same as in Example 1, and its difference is: bottom heat-insulating shield 16 and horizontal angle are 45 °；B point, the line of C point and the angle of vertical line are 45 °.
Embodiment 3
The bundled tube residual neat recovering system of the anti stick raw coke oven gas of the present embodiment, its basic structure is same as in Example 1, and its difference is: bottom heat-insulating shield 16 and horizontal angle are 30 °；B point, the line of C point and the angle of vertical line are 30 °.
Schematically being described this utility model and embodiment thereof above, this description does not has restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited thereto.So, if those of ordinary skill in the art is enlightened by it, in the case of creating objective without departing from this utility model, design the frame mode similar to this technical scheme and embodiment without creative, protection domain of the present utility model all should be belonged to.
Claims (10)
1. the bundled tube residual neat recovering system of an anti stick raw coke oven gas, including tedge (1), it is characterized in that: also include restraining heat-exchanger rig (2) and special-shaped connecting tube (3), the top of described tedge (1) is provided with tedge extension (101) straight up, and this tedge extension (101) is connected with special-shaped connecting tube (3) by tube bank heat-exchanger rig (2)；
Described tedge is not provided with any heat-exchanger rig in (1)；Described tube bank heat-exchanger rig (2) includes multiple single assembly arranged in parallel.
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 1, it is characterized in that: described tube bank heat-exchanger rig (2) also includes body of thermal insulating box (10), the entrance of body of thermal insulating box (10) is positioned at the side of this body of thermal insulating box (10), the outlet of body of thermal insulating box (10) is positioned at the bottom surface of this body of thermal insulating box (10), and the bottom heat-insulating shield (16) passing through between the entrance of body of thermal insulating box (10) and the outlet of body of thermal insulating box (10) to be obliquely installed is connected, and heat-insulating shield (16) is removably attached to the bottom surface of body of thermal insulating box (10) bottom this.
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 2, it is characterized in that: single assembly includes heat exchange transverse tube (201), lower heat exchange inclined tube (202), lower heat exchange transverse tube (203) and heat exchange vertical tube (204), the two-port of described upper heat exchange transverse tube (201) seals, and upper heat exchange transverse tube (201) is positioned at the inwall at body of thermal insulating box (10) top；Described lower heat exchange inclined tube (202) is positioned on bottom heat-insulating shield (16), lower heat exchange transverse tube (203) is positioned at the top that body of thermal insulating box (10) exports, it is an overall heat exchange pipe that lower heat exchange inclined tube (202) connects with lower heat exchange transverse tube (203), and the two-port of this overall heat exchange pipe seals；Multiple heat exchange vertical tubes (204) being vertically arranged equidistantly are arranged in a row, the upper port of the heat exchange vertical tube (204) being arranged in a row is respectively communicated with on upper heat exchange transverse tube (201) side, and the lower port of the heat exchange vertical tube (204) being arranged in a row is respectively communicated with on described overall heat exchange tube side face.
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 3, it is characterized in that: the side of described tedge extension (101) is connected by the entrance of horizontally disposed connecting tube (6) with body of thermal insulating box (10), the outlet of body of thermal insulating box (10) is connected by the entrance of lower adpting flange (5) with special-shaped connecting tube (3).
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 4, it is characterized in that: described connecting tube (6) is divided into two sections, one section of connecting tube (6) connects with the side of tedge extension (101), another section of connecting tube (6) connects with the entrance of body of thermal insulating box (10), is connected by upper adpting flange (4) between two sections of connecting tube (6)；The outer surface of connecting tube (6) is enclosed with heat-insulation layer (7).
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 3, it is characterized in that: the heat exchange vertical tube (204) on all single assemblies is divided into edge heat exchange vertical tube and internal heat vertical tube, described edge heat exchange vertical tube and the contact internal walls of body of thermal insulating box (10), adjacent two edge heat exchange vertical tubes contact；Described internal heat vertical tube is positioned at the space that edge heat exchange vertical tube surrounds, and does not contacts between adjacent two internal heat vertical tubes.
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 3, it is characterized in that: the end of each lower heat exchange inclined tube (202) all connects a water inlet pipe (8), all of water inlet pipe (8) connects with a water inlet manifold (15)；The end of each upper heat exchange transverse tube (201) all connects a vapour-discharge tube (9), and all of vapour-discharge tube (9) all connects with a drum (14).
The bundled tube residual neat recovering system of anti stick raw coke oven gas the most according to claim 3, it is characterised in that: the inwall of the outer wall of single assembly, the inwall of body of thermal insulating box (10), the inwall of bottom heat-insulating shield (16) and special-shaped connecting tube (3) all scribbles non-sticking lining.
9. according to the bundled tube residual neat recovering system of the anti stick raw coke oven gas described in claim 2～8 any one, it is characterized in that: on described special-shaped connecting tube (3), be provided with high pressure aqua ammonia nozzle (11), low-pressure ammonia (operating) water nozzle (13) and peep-hole (12), the underface of described high pressure aqua ammonia nozzle (11) is the outlet of special-shaped connecting tube (3), the outlet of special-shaped connecting tube (3) relative to outlet distance tedge (1) of body of thermal insulating box (10) horizontal range closer to, the central point in special-shaped connecting tube (3) exit is C point, the central point in body of thermal insulating box (10) exit is B point, B point, the line of C point and the angle of vertical line are 15～45 °.
10. according to the bundled tube residual neat recovering system of the anti stick raw coke oven gas described in claim 2～8 any one, it is characterised in that: described bottom heat-insulating shield (16) and horizontal angle are 20～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620180202.3U CN205473564U (en) | 2016-03-09 | 2016-03-09 | Tube bundle waste heat recovery system of anti stick raw coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620180202.3U CN205473564U (en) | 2016-03-09 | 2016-03-09 | Tube bundle waste heat recovery system of anti stick raw coke oven gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205473564U true CN205473564U (en) | 2016-08-17 |
Family
ID=56656713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620180202.3U Expired - Fee Related CN205473564U (en) | 2016-03-09 | 2016-03-09 | Tube bundle waste heat recovery system of anti stick raw coke oven gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205473564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602582A (en) * | 2016-03-09 | 2016-05-25 | 安徽工业大学 | Anti-bonding pipe bundle type waste heat recycling system for raw coke oven gas |
-
2016
- 2016-03-09 CN CN201620180202.3U patent/CN205473564U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602582A (en) * | 2016-03-09 | 2016-05-25 | 安徽工业大学 | Anti-bonding pipe bundle type waste heat recycling system for raw coke oven gas |
| CN105602582B (en) * | 2016-03-09 | 2018-08-07 | 安徽工业大学 | A kind of bundled tube residual neat recovering system of anti stick raw coke oven gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102796537B (en) | System and method for recovering superheated steam of waste heat of raw gas of combined coke oven | |
| CN103131432B (en) | Method for recovering waste heat from coke oven raw gas | |
| CN104031658B (en) | High temperature raw gas waste heat and tar recovery system and recovery method thereof | |
| CN104677143B (en) | A kind of anti stick gravity flow waste heat of coke oven crude gas reclaims heat exchange unit | |
| CN105890414A (en) | Flue gas waste heat recovery device capable of changing super conductive tube rapidly | |
| CN203668308U (en) | Unit type coke oven ascending pipe waste heat recovery device | |
| CN205403559U (en) | Heat pipe formula waste heat recovery system of anti stick raw coke oven gas | |
| CN102519285B (en) | Integrated technique and special equipment for raw gas waste heat recovery and steam replacement with heat transfer soil | |
| CN205473564U (en) | Tube bundle waste heat recovery system of anti stick raw coke oven gas | |
| CN105605954B (en) | A kind of heat pipe-type residual neat recovering system of anti stick raw coke oven gas | |
| CN101619894A (en) | Two-time condensation recovery device for waste heat of coke-oven crude gas | |
| CN208829589U (en) | A kind of tedge waste-heat recovery device | |
| CN208279557U (en) | A kind of coke oven threeway bridge tube heat exchanger apparatus | |
| CN204824714U (en) | Coke oven crude gas waste heat recovery heat transfer device | |
| CN204079875U (en) | A kind of new Type Coke Oven raw gas waste-heat recovery device | |
| CN204283520U (en) | Waste heat of coke oven crude gas power generation system | |
| CN206563310U (en) | A kind of direct contact type efficient flue gas waste heat retracting device | |
| CN103147807B (en) | Power generation system using waste heat of coke oven crude gas | |
| CN104073268A (en) | Coking-preventing raw coke oven gas waste heat recycling device for heat-conduction oil coke oven | |
| CN204478876U (en) | A kind of anti stick gravity flow waste heat of coke oven crude gas reclaims heat exchange unit | |
| CN202808702U (en) | Combined system for recovering superheated steam from afterheat of coke-oven raw gas | |
| CN104728821A (en) | Ascending pipe raw gas waste heat utilizing boiler system | |
| CN205368240U (en) | Detachable raw coke oven gas heat recovery unit | |
| CN105602582B (en) | A kind of bundled tube residual neat recovering system of anti stick raw coke oven gas | |
| CN204786295U (en) | Tedge raw coke oven gas waste heat utilization boiler system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170309 |