CN110499168A - A kind of series connection double base protection raw coke oven gas heat recovery heat exchanger tedge - Google Patents
A kind of series connection double base protection raw coke oven gas heat recovery heat exchanger tedge Download PDFInfo
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- CN110499168A CN110499168A CN201910916347.3A CN201910916347A CN110499168A CN 110499168 A CN110499168 A CN 110499168A CN 201910916347 A CN201910916347 A CN 201910916347A CN 110499168 A CN110499168 A CN 110499168A
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- heat
- transferring medium
- coke oven
- oven gas
- raw coke
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- 239000000571 coke Substances 0.000 title claims abstract description 108
- 238000011084 recovery Methods 0.000 title claims abstract description 77
- 230000008676 import Effects 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims description 95
- 239000002918 waste heat Substances 0.000 claims description 14
- 238000004064 recycling Methods 0.000 claims description 10
- 239000003245 coal Substances 0.000 abstract description 8
- 230000033001 locomotion Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000000197 pyrolysis Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coke Industry (AREA)
Abstract
The present invention relates to a kind of series connection double bases to protect raw coke oven gas heat recovery heat exchanger tedge; the tedge includes heat recovery heat exchanger tedge (1); around being equipped with heat transferring medium pipe on heat recovery heat exchanger tedge (1) tube wall; the heat transferring medium pipe includes heat exchange cold medium import (2) and heat exchange cold medium outlet (3), and heat exchange cold medium import balanced valve (12) is provided at the heat exchange cold medium import (2).The present invention can adapt to raw coke oven gas quantum of output and fire falls curvilinear motion operating condition, the constant of flow is controlled by the pressure difference of heat recovery heat exchanger tedge heat transferring medium import, i.e. big in coal oven dithio-gas quantum of output, when heat exchange amount is big, heat transferring medium inlet outlet pressure differential be will increase, it will cause the increase of heat transferring medium resistance drop, tedge flow is set to generate decreasing trend, which is exactly that pressure difference is unidirectionally adjusted, and increases inlet area, resistance is reduced, it is constant to stablize tedge flow；Vice versa.
Description
Technical field
The present invention relates to a kind of series connection double bases to protect raw coke oven gas heat recovery heat exchanger tedge, is mainly used for coke oven famine coal
The recycling of gas waste heat, belongs to technical field of heat exchangers.
Background technique
Waste heat of coke oven crude gas recycling tedge is being promoted or the relatively broad coal oven dithio-gas that is applied to
Waste heat recycling.Coke oven has multiple destructive distillation rooms (burner hearth) to form side by side, and each burner hearth has one or two tedge to go out destructive distillation
The raw coke oven gas come is sent to bridge tube, after rapid cooling, then raw coke oven gas is sent into gas collecting tube.Waste heat of coke oven crude gas recycles tedge just
It is by the tedge of original filling with insulation material, replacement becomes waste heat of coke oven crude gas and recycles tedge, is listed in furnace roof and simultaneously
It is coupled to gas collecting tube.Coke oven production is batch production, is required in each oven coke production process by adding (dress) coal, heating dry
It evaporates, ripe coke, several production processes such as coke pushing, the coke of each furnace production will add (dress) coal, heating destructive distillation, ripe coke, coke pushing
Etc. the temperature curve for forming a fire in several production processes and falling temperature change, that is, the raw coke oven gas output during dry distillation of coal
The real-time change of amount and component, also results in the variation of the heat exchange amount of raw coke oven gas heat recovery heat exchanger tedge, and then cause
Raw coke oven gas heat recovery heat exchanger tedge causes the recycling heat exchange of raw coke oven gas waste heat in the variation of intraductal heat exchange medium rate of gasification
Device tedge heat transferring medium real-time pressure drop variation, in turn result in raw coke oven gas heat recovery heat exchanger tedge arranged side by side into
The variation of water flow, that is heat exchange amount increases when raw coke oven gas quantum of output is big, takes in heat recovery heat exchanger tedge
Heat increases pressure rise, and at this moment heat exchanger should be that inflow increasing is more advantageous to waste heat recycling, and actual conditions are in parallel
Other heat recovery heat exchanger tedges occur actual conditions be in heat recovery heat exchanger tedge heat transferring medium pass in and out
Mouthful pressure difference increases, and at this moment heat exchanger should measure to reduce into water (or other heat transferring mediums), caused by after actual conditions are parallel connection
Other reduce heat recoveries tedges just will increase water flow.The raw coke oven gas waste heat recycling for thus causing multiple groups in parallel is changed
The bias current of the water (or other hot working fluids) of hot device tedge heat transferring medium, reduces waste heat recovery efficiency.
It currently, is mostly to use a string sequence parallel connection heat recovery heat exchanger tedge export pipeline for one according to production string sequence
Group, the method that then parallel connection intervenes outlet header again；Also with good grounds production string sequence is using a string sequence parallel connection waste heat recycling heat exchange
Device tedge export pipeline is one group of technical solution being adjusted using regulating valve；Have again in heat recovery heat exchanger tedge
Inlet and outlet install orifice plate additional and carry out current limliting, form water (or other hot working fluids) stabilization of heat transferring medium.
It is inclined essentially without the water (or other hot working fluids) for solving heat transferring medium using method in parallel according to production string sequence
Flow problem；There is the actual conditions of the unusable inorganization flame in scene, i.e. actual conditions not to allow for the scheme of regulating valve
Addition uses regulating valve；It is asked using orifice plate current limliting also without substantive water (or other hot working fluids) bias current for solving heat transferring medium
Topic.
In addition, not allowing burner hearth to intake in the life cycle of coke oven production process, burner hearth will cause burner hearth once intaking
Damage, causes extreme loss, also brings hidden danger to safety in production.
It is current solve control heat recovery heat exchanger to rise tube leakage in the method in burner hearth to be used in the double-deck tedge
Wall construction, to increase safety factor, the high temperature corrosion that this method will result in collet metal after inner cylinder damage is destroyed, practical
Method is procrastinateed in a upper only failure, does not solve root problem；There are also the instrument controls of monitoring tedge outlet raw gas temperature
Method, this method are not allow for actual condition existing for instrument line as scene, and there is also critical defects.
Summary of the invention
The technical problem to be solved by the present invention is to for the above-mentioned prior art provide flow distribution in a kind of pipe it is balanced and
Once leak (or other hot working fluids) can cut off the water supply in time (or other hot working fluids) series connection double base protection raw coke oven gas waste heat return
Receive heat exchanger tedge.
The present invention solves the above problems used technical solution are as follows: a kind of series connection double base protection raw coke oven gas waste heat recycling is changed
Hot device tedge, it includes heat recovery heat exchanger tedge, and the heat recovery heat exchanger, which rises, to be changed on tube wall around being equipped with
Thermal medium pipe (or other forms device, such as thermal jacket), the heat transferring medium pipe includes heat transferring medium import and heat transferring medium
Outlet, the heat transferring medium entrance, which is sequentially connected, is provided with the first balanced valve and the second balanced valve, the first balanced valve packet
First piston formula spool is included, the first piston formula spool two sides are respectively arranged with the first balanced valve import and the first balanced valve goes out
Mouthful, second balanced valve includes second piston formula spool, and the second piston formula spool two sides are respectively arranged with the second balance
Valve import and the second balancing valve outlet, first balancing valve outlet are connected with heat transferring medium import, second balanced valve
Outlet is connected with the first balanced valve import, and the second balanced valve import is connect with Outer Tube accesses heat transferring medium, and described the
One piston valve core lower end is connected with first piston chamber, and heat transferring medium import impulse ozzle is provided on the first piston chamber,
The first piston formula spool upper end is connected with second piston chamber, and heat transferring medium outlet impulse is provided on the second piston chamber
Ozzle, the second piston formula spool upper end are connected with the 4th plunger shaft, and raw coke oven gas outlet is provided in the 4th plunger shaft
Impulse ozzle, the heat transferring medium pipe are being respectively arranged with heat exchange Jie close to heat transferring medium import and heat transferring medium exit position
Matter entrance impulse mouth and heat transferring medium export impulse mouth, and the heat recovery heat exchanger tedge is being arranged at upper end position
There is raw coke oven gas to export impulse mouth, is connected between the heat transferring medium entrance impulse mouth and heat transferring medium import impulse ozzle
Heat transferring medium entrance pressure guiding pipe is connected between the heat transferring medium outlet impulse mouth and heat transferring medium outlet impulse ozzle
Heat transferring medium exports pressure guiding pipe, is connected with waste coal between the raw coke oven gas outlet impulse mouth and raw coke oven gas outlet impulse ozzle
Gas exports pressure guiding pipe.
The second piston formula spool lower end is connected with third plunger shaft, is provided with raw coke oven gas in the third plunger shaft and enters
Mouth impulse ozzle, the heat recovery heat exchanger tedge are being provided with raw coke oven gas entrance impulse mouth, institute at lower end position
It states and is connected with raw coke oven gas entrance pressure guiding pipe between raw coke oven gas entrance impulse mouth and raw coke oven gas entrance impulse ozzle.
Heat exchange cold medium outlet) at be provided with the check valve installed in the same direction with heat transferring medium.
The second piston is intracavitary to be provided with the first balancing spring, is provided with the second equilibrium bomb in the 4th plunger shaft
Spring.
Down big up small horn mouth is provided on the balanced valve piston valve core.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention can adapt to raw coke oven gas quantum of output and fire falls curvilinear motion operating condition, be risen by heat recovery heat exchanger
The pressure difference Reverse Turning Control flow of pipe heat transferring medium import it is constant or required, i.e., big in coal oven dithio-gas quantum of output, heat exchange amount is big
When, heat transferring medium inlet outlet pressure differential will increase, and will cause the increase of heat transferring medium resistance drop, tedge flow is made to generate reduction
Trend, the balanced valve are exactly that pressure difference is reversely adjusted, and increase inlet area, reduce resistance, stable tedge flow is constant or increases
Flow is adjusted, and improves the thermal efficiency；Vice versa；
2, the present invention, once tedge heat exchanger failure causes interior leakage, will cause tedge in tedge operational process
The pressure difference in interior raw coke oven gas channel increases, and the pressure difference of increase can make valve cutting rise continuing to flow into for heat exchange of heat pipe heat transferring medium,
Stop the tedge continuing to run, plays the role of protecting coke oven.
Detailed description of the invention
Fig. 1 is the schematic diagram that a kind of series connection double base of the present invention protects raw coke oven gas heat recovery heat exchanger tedge embodiment 1.
Fig. 2 is the schematic diagram that a kind of series connection double base of the present invention protects raw coke oven gas heat recovery heat exchanger tedge embodiment 2.
Wherein:
Heat recovery heat exchanger tedge 1
Heat transferring medium import 2
Heat transferring medium outlet 3
Heat transferring medium entrance impulse mouth 4
Heat transferring medium entrance pressure guiding pipe 5
Heat transferring medium exports impulse mouth 6
Heat transferring medium exports pressure guiding pipe 7
Raw coke oven gas entrance impulse mouth 8
Raw coke oven gas entrance pressure guiding pipe 9
Raw coke oven gas exports impulse mouth 10
Raw coke oven gas exports pressure guiding pipe 11
First balanced valve 12
First balanced valve import 12-1
First balancing valve outlet 12-2
First piston formula spool 12-3
First piston chamber 12-4
Heat transferring medium import impulse ozzle 12-5
Second piston chamber 12-6
First balancing spring 12-7
Heat transferring medium exports impulse ozzle 12-8
Check valve 13
Second balanced valve 14
Second balanced valve import 14-1
Second balancing valve outlet 14-2
Second piston formula spool 14-3
Third plunger shaft 14-4
Raw coke oven gas entrance impulse ozzle 14-5
4th plunger shaft 14-6
Second balancing spring 14-7
Raw coke oven gas exports impulse ozzle 14-8.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1: balanced valve is cut off using heat recovery heat exchanger ascending tube crude-gas inlet outlet pressure differential
Referring to Fig. 1, a kind of series connection double base protection raw coke oven gas heat recovery heat exchanger tedge of the present invention, it includes
Heat recovery heat exchanger tedge 1, on 1 tube wall of heat recovery heat exchanger tedge around be equipped with heat transferring medium pipe (or other
Form of device, such as thermal jacket), the heat transferring medium pipe includes heat transferring medium import 2 and heat transferring medium outlet 3, the heat exchange
It is sequentially connected at medium entrance 2 and is provided with the first balanced valve 12 and the second balanced valve 14, first balanced valve 12 includes first
It is flat that the two sides piston valve core 12-3, the first piston formula spool 12-3 are respectively arranged with the first balanced valve import 12-1 and first
Weigh valve outlet 12-2, and second balanced valve 14 includes second piston formula spool 14-3, the second piston formula spool 14-3 two
Side is respectively arranged with the second balanced valve import 14-1 and the second balancing valve outlet 14-2, the first balancing valve outlet 12-2 and changes
Thermal medium inlet 2 is connected, and the second balancing valve outlet 14-2 is connected with the first balanced valve import 12-1, and described second is flat
Weighing apparatus valve import 14-1 connect access heat transferring medium with Outer Tube, and the lower end the first piston formula spool 12-3 is connected with first piston
Heat transferring medium import impulse ozzle 12-5, the first piston formula spool are provided on chamber 12-4, the first piston chamber 12-4
The upper end 12-3 is connected with second piston chamber 12-6, and the first balancing spring 12-7 is provided in the second piston chamber 12-6, described
Heat transferring medium outlet impulse ozzle 12-8, the second piston formula lower end the spool 14-3 connection are provided on second piston chamber 12-6
There is third plunger shaft 14-4, raw coke oven gas entrance impulse ozzle 14-5 is provided on the third plunger shaft 14-4, described second is living
The upper end plug spool 14-3 is connected with the 4th plunger shaft 14-6, is provided with the second balancing spring in the 4th plunger shaft 14-6
Raw coke oven gas outlet impulse ozzle 14-8 is provided on 14-7, the 4th plunger shaft 14-6, the heat transferring medium pipe is changed close
Heat transferring medium entrance impulse mouth 4 is respectively arranged at 3 positions of thermal medium inlet 2 and heat transferring medium outlet and heat transferring medium outlet is drawn
Mouth 6 is pressed, the heat recovery heat exchanger tedge 1 is being respectively arranged with raw coke oven gas outlet impulse mouth at upper and lower ends position
10 and raw coke oven gas entrance impulse mouth 8, connect between the heat transferring medium entrance impulse mouth 4 and heat transferring medium import impulse ozzle 12-5
It connects and is provided with heat transferring medium entrance pressure guiding pipe 5, the heat transferring medium outlet impulse mouth 6 and heat transferring medium export impulse ozzle 12-8
Between be connected with heat transferring medium outlet pressure guiding pipe 7, the raw coke oven gas entrance impulse mouth 8 and raw coke oven gas entrance impulse ozzle
Raw coke oven gas entrance pressure guiding pipe 9 is connected between 14-5, the raw coke oven gas outlet impulse mouth 10 and raw coke oven gas export pressure guiding pipe
Raw coke oven gas outlet pressure guiding pipe 11 is connected between mouth 14-8；
It is provided with the check valve 13 installed in the same direction with heat transferring medium at the heat transferring medium outlet 3, is avoided on stopping this
When riser continues to run, there are also heat transferring mediums inversely to flow into coke oven.
The essence of raw coke oven gas heat recovery heat exchanger tedge binary automatic protection is by heat transferring medium import balanced valve
12 are adjusted protection, and adjusting protection philosophy is heat transferring medium import balanced valve 12 for raw coke oven gas heat recovery heat exchanger
The adjusting of the heat transferring medium flow of tedge 1 controls, and specific control method is as follows:
Initial flow is set, heat transferring medium entrance impulse mouth 4 is living using the connection of heat transferring medium entrance pressure guiding pipe 5 access first
The heat transferring medium import impulse ozzle 12-5 on chamber 12-4 is filled in, it is P1 that pressure is formed in the first piston chamber 12-5 that it is communicated；
At this moment the pressure for acting on the lower end surface first piston formula spool 12-3 is P1；
Heat transferring medium exports the heat exchange that impulse mouth 6 is accessed using heat transferring medium outlet pressure guiding pipe 7 on second piston chamber 12-6
Media outlet impulse ozzle 12-8, second piston chamber 12-6 are provided with the first balancing spring 12-7, heat transferring medium outlet pressure+the
The pressure of one balancing spring 12-7 and be P2；At this moment the pressure for acting on the upper surface first piston formula spool 12-3 is P2；
So that the opening size of piston hole when P1=P2 is identical as setting value, that is to say, that the setting of initial flow is
Meet the feedwater flow of 1 heat transfer requirements of heat recovery heat exchanger tedge and the suitable ratio value of evaporation capacity, first is living at this time
The aperture of plug spool 12-3 aperture is after initial set value, the operation of heat recovery heat exchanger tedge 1 can be realized；
When raw coke oven gas quantum of output variation in coke oven operational process and the heat exchange evaporation capacity variation of heat recovery heat exchanger tedge 1
Increase when being increased based on heat, the pressure formed in heat recovery heat exchanger tedge 1 will change, cause to exchange heat cold medium into
Mouth 2 exports 3 imbalance of pressure intracavitary in first piston formula spool 12-3 pressure at two ends with heat exchange cold medium, so that P1 > P2, this
When first piston formula spool 12-3 move up, down big up small horn mouth is provided on first piston formula spool 12-3, first is living
Plug spool 12-3 moves up proportion expression and increases the aperture of the first balanced valve 12, increases the flow of heat transferring medium, at this time
Heat recovery heat exchanger tedge 1 needs to increase heat transferring medium supply to realize that exchanging the thermal efficiency for maximizes, so, it realizes
Heat transferring medium flow optimal control；
Conversely, when raw coke oven gas quantum of output variation in coke oven operational process and the heat exchange evaporation of heat recovery heat exchanger tedge 1
When amount variation is reduced based on heat reduction, the pressure formed in heat recovery heat exchanger tedge 1 will change, and cause to exchange heat cold
Medium entrance 2 and heat exchange cold medium export 3 imbalance of pressure intracavitary in first piston formula spool 12-3 pressure at two ends, so that P1 <
P2, first piston formula spool 12-3 are moved down, and down big up small horn mouth is provided on first piston formula spool 12-3, and first is living
Plug spool 12-3 moves down the aperture that proportion expression reduces the first balanced valve 12, reduces the flow of heat transferring medium, at this time
Heat recovery heat exchanger tedge 1 needs to reduce heat transferring medium supply and takes maximum heat exchange efficiency to realize, in this way, also realizing
Heat transferring medium flow optimal control.
Initial flow is set, raw coke oven gas entrance impulse mouth 8 is using the connection of raw coke oven gas entrance pressure guiding pipe 9 access and third piston
Raw coke oven gas entrance impulse ozzle 14-5 on chamber 14-4, it is P3 that pressure is formed in the third plunger shaft 14-4 that it is communicated；At this moment
The pressure for acting on the lower end surface second piston formula spool 14-3 is P3；
Raw coke oven gas outlet impulse mouth 10 is using on the raw coke oven gas outlet connection of pressure guiding pipe 11 access and the 4th plunger shaft 14-6
Raw coke oven gas exports impulse ozzle 14-8, and it is P4 (under normal operation that pressure is formed in the 4th plunger shaft 14-8 that it is communicated
P4 is usually normal pressure or micro-positive pressure)；
So that the opening size of piston hole when P3=P4 is identical as setting value, that is to say, that the setting of initial flow is
Meet the feedwater flow of 1 heat transfer requirements of heat recovery heat exchanger tedge and the suitable ratio value of evaporation capacity, at this time balanced valve
The aperture of piston valve core 14-3 aperture is after initial set value, the operation of heat recovery heat exchanger tedge 1 can be realized
；
When interior leakage occurs in heat recovery heat exchanger tedge 1, raw coke oven gas in heat recovery heat exchanger tedge 1 is flowed into
Heat transferring medium meeting instant vaporization, causes the pressure difference of P3 and P4 increased dramatically, so that P3 < < P4, second piston formula spool 14-3 is fast
It is irrecoverable that speed is moved downward to dead point, and the second balanced valve 14 is closed, and heat exchange is situated between in cutting heat recovery heat exchanger tedge 1
The entrance of matter；Due to the check valve 13 that 1 heat transferring medium of heat recovery heat exchanger tedge outlet 3 is equipped with, automatically cuts off heat exchange and be situated between
Medium inversely flows into heat recovery heat exchanger tedge 1 at matter outlet 3, avoids heat transferring medium from largely flowing into coke oven to realize
Control.
Balanced valve is the principle that flow pressure-difference variation relation is solved using equilibrium principle, can also be developed into single-ended
Pressure difference adjustable type, such as adjust the structure of valve type.
Embodiment 2: balanced valve is cut off using heat recovery heat exchanger ascending tube crude-gas outlet pressure
Referring to fig. 2, a kind of series connection double base of the present invention protects raw coke oven gas heat recovery heat exchanger tedge, it includes
Heat recovery heat exchanger tedge 1, on 1 tube wall of heat recovery heat exchanger tedge around be equipped with heat transferring medium pipe (or other
Form of device, such as thermal jacket), the heat transferring medium pipe includes heat transferring medium import 2 and heat transferring medium outlet 3, the heat exchange
It is sequentially connected at medium entrance 2 and is provided with the first balanced valve 12 and the second balanced valve 14, first balanced valve 12 includes first
It is flat that the two sides piston valve core 12-3, the first piston formula spool 12-3 are respectively arranged with the first balanced valve import 12-1 and first
Weigh valve outlet 12-2, and second balanced valve 14 includes second piston formula spool 14-3, the second piston formula spool 14-3 two
Side is respectively arranged with the second balanced valve import 14-1 and the second balancing valve outlet 14-2, the first balancing valve outlet 12-2 and changes
Thermal medium inlet 2 is connected, and the second balancing valve outlet 14-2 is connected with the first balanced valve import 12-1, and described second is flat
Weighing apparatus valve import 14-1 connect access heat transferring medium with Outer Tube, and the lower end the first piston formula spool 12-3 is connected with first piston
Heat transferring medium import impulse ozzle 12-5, the first piston formula spool are provided on chamber 12-4, the first piston chamber 12-4
The upper end 12-3 is connected with second piston chamber 12-6, and the first balancing spring 12-7 is provided in the second piston chamber 12-6, described
Heat transferring medium outlet impulse ozzle 12-8, the second piston formula upper end the spool 14-3 connection are provided on second piston chamber 12-6
There is the 4th plunger shaft 14-6, the second balancing spring 14-7, the 4th plunger shaft 14- are provided in the 4th plunger shaft 14-6
Raw coke oven gas outlet impulse ozzle 14-8 is provided on 6, the heat transferring medium pipe goes out close to heat transferring medium import 2 and heat transferring medium
Heat transferring medium entrance impulse mouth 4 and heat transferring medium outlet impulse mouth 6, the waste heat recycling heat exchange are respectively arranged at 3 positions of mouth
Device tedge 1 is being provided with raw coke oven gas outlet impulse mouth 10 at the upper end position, the heat transferring medium entrance impulse mouth 4 with change
Heat transferring medium entrance pressure guiding pipe 5 is connected between thermal medium inlet impulse ozzle 12-5, the heat transferring medium exports impulse
Heat transferring medium outlet pressure guiding pipe 7, the raw coke oven gas outlet are connected between mouth 6 and heat transferring medium outlet impulse ozzle 12-8
Raw coke oven gas outlet pressure guiding pipe 11 is connected between impulse mouth 10 and raw coke oven gas outlet impulse ozzle 14-8；
It is provided with the check valve 13 installed in the same direction with heat transferring medium at the heat transferring medium outlet 3, is avoided on stopping this
When riser continues to run, there are also heat transferring mediums inversely to flow into coke oven.
The essence of raw coke oven gas heat recovery heat exchanger tedge binary automatic protection is by heat transferring medium import balanced valve
12 are adjusted protection, and adjusting protection philosophy is heat transferring medium import balanced valve 12 for raw coke oven gas heat recovery heat exchanger
The adjusting of the heat transferring medium flow of tedge 1 controls, and specific control method is as follows:
Initial flow is set, heat transferring medium entrance impulse mouth 4 is living using the connection of heat transferring medium entrance pressure guiding pipe 5 access first
The heat transferring medium import impulse ozzle 12-5 on chamber 12-4 is filled in, it is P1 that pressure is formed in the first piston chamber 12-5 that it is communicated；
At this moment the pressure for acting on the lower end surface first piston formula spool 12-3 is P1；
Heat transferring medium exports the heat exchange that impulse mouth 6 is accessed using heat transferring medium outlet pressure guiding pipe 7 on second piston chamber 12-6
Media outlet impulse ozzle 12-8, second piston chamber 12-6 are provided with the first balancing spring 12-7, heat transferring medium outlet pressure+the
The pressure of one balancing spring 12-7 and be P2；At this moment the pressure for acting on the upper surface first piston formula spool 12-3 is P2；
So that the opening size of piston hole when P1=P2 is identical as setting value, that is to say, that the setting of initial flow is
Meet the feedwater flow of 1 heat transfer requirements of heat recovery heat exchanger tedge and the suitable ratio value of evaporation capacity, first is living at this time
The aperture of plug spool 12-3 aperture is after initial set value, the operation of heat recovery heat exchanger tedge 1 can be realized；
When raw coke oven gas quantum of output variation in coke oven operational process and the heat exchange evaporation capacity variation of heat recovery heat exchanger tedge 1
Increase when being increased based on heat, the pressure formed in heat recovery heat exchanger tedge 1 will change, cause to exchange heat cold medium into
Mouth 2 exports 3 imbalance of pressure intracavitary in first piston formula spool 12-3 pressure at two ends with heat exchange cold medium, so that P1 > P2, this
When first piston formula spool 12-3 move up, down big up small horn mouth is provided on first piston formula spool 12-3, first is living
Plug spool 12-3 moves up proportion expression and increases the aperture of the first balanced valve 12, increases the flow of heat transferring medium, at this time
Heat recovery heat exchanger tedge 1 needs to increase heat transferring medium supply to realize that exchanging the thermal efficiency for maximizes, so, it realizes
Heat transferring medium flow optimal control；
Conversely, when raw coke oven gas quantum of output variation in coke oven operational process and the heat exchange evaporation of heat recovery heat exchanger tedge 1
When amount variation is reduced based on heat reduction, the pressure formed in heat recovery heat exchanger tedge 1 will change, and cause to exchange heat cold
Medium entrance 2 and heat exchange cold medium export 3 imbalance of pressure intracavitary in first piston formula spool 12-3 pressure at two ends, so that P1 <
P2, first piston formula spool 12-3 are moved down, and down big up small horn mouth is provided on first piston formula spool 12-3, and first is living
Plug spool 12-3 moves down the aperture that proportion expression reduces the first balanced valve 12, reduces the flow of heat transferring medium, at this time
Heat recovery heat exchanger tedge 1 needs to reduce heat transferring medium supply and takes maximum heat exchange efficiency to realize, in this way, also realizing
Heat transferring medium flow optimal control.
Initial flow is set, the pressure at this moment acting on the lower end surface balanced valve piston valve core 12-3 is normal pressure P3；
Raw coke oven gas outlet impulse mouth 10 is using on the raw coke oven gas outlet connection of pressure guiding pipe 11 access and the 4th plunger shaft 14-6
Raw coke oven gas exports impulse ozzle 14-8, and it is P4 (under normal operation that pressure is formed in the 4th plunger shaft 14-8 that it is communicated
P4 is usually normal pressure or micro-positive pressure)；
So that the opening size of piston hole when P3=P4 is identical as setting value, that is to say, that the setting of initial flow is
Meet the feedwater flow of 1 heat transfer requirements of heat recovery heat exchanger tedge and the suitable ratio value of evaporation capacity, at this time balanced valve
The aperture of piston valve core 14-3 aperture is after initial set value, the operation of heat recovery heat exchanger tedge 1 can be realized
When interior leakage occurs in heat recovery heat exchanger tedge 1, raw coke oven gas in heat recovery heat exchanger tedge 1 is flowed into
Heat transferring medium can instant vaporization, cause the pressure of P3 increased dramatically so that P3 < < P4, second piston formula spool 14-3 quickly to
Lower movement is put irrecoverable till death, and the second balanced valve 14 is closed, and cuts off heat transferring medium in heat recovery heat exchanger tedge 1
Into；Due to the check valve 13 that 1 heat transferring medium of heat recovery heat exchanger tedge outlet 3 is equipped with, automatically cuts off heat transferring medium and go out
Medium inversely flows into heat recovery heat exchanger tedge 1 at mouth 3, to realize the control for avoiding heat transferring medium from largely flowing into coke oven
System.
Described here is all up and down to refer to, and can be orientation, the principle of balance such as front and back up and down and is also possible to piston
The technical solution that the basic principles such as the diaphragm control valve other than formula communicate.
Outside above-described embodiment, the invention also includes have other embodiments, all use equivalent transformation or equivalent replacement sides
The technical solution that formula is formed, should all fall within the scope of the hereto appended claims.
Claims (5)
1. a kind of series connection double base protects raw coke oven gas heat recovery heat exchanger tedge, it is characterised in that: it includes that waste heat recycling is changed
Hot device tedge (1), around being equipped with heat transferring medium pipe, the heat transferring medium on heat recovery heat exchanger tedge (1) tube wall
Pipe includes that heat transferring medium import (2) and heat transferring medium export (3), is sequentially connected at the heat transferring medium import (2) and is provided with the
One balanced valve (12) and the second balanced valve (14), first balanced valve (12) includes first piston formula spool (12-3), described
The two sides first piston formula spool (12-3) are respectively arranged with the first balanced valve import (12-1) and the first balancing valve outlet (12-2),
Second balanced valve (14) includes second piston formula spool (14-3), and second piston formula spool (14-3) two sides are set respectively
It is equipped with the second balanced valve import (14-1) and the second balancing valve outlet (14-2), first balancing valve outlet (12-2) and heat exchange
Medium entrance (2) is connected, and second balancing valve outlet (14-2) is connected with the first balanced valve import (12-1), and described
Two balanced valve imports (14-1) connect access heat transferring medium with Outer Tube, and first piston formula spool (12-3) lower end is connected with
First piston chamber (12-4) is provided with heat transferring medium import impulse ozzle (12-5) on the first piston chamber (12-4), described
The upper end first piston formula spool (12-3) is connected with second piston chamber (12-6), is provided with and is changed on the second piston chamber (12-6)
Thermal medium outlet impulse ozzle (12-8), second piston formula spool (14-3) upper end are connected with the 4th plunger shaft (14-6),
Raw coke oven gas outlet impulse ozzle (14-8) is provided on 4th plunger shaft (14-6), the heat transferring medium pipe is close to heat exchange
Heat transferring medium entrance impulse mouth (4) is respectively arranged at medium entrance (2) and heat transferring medium outlet (3) position and heat transferring medium goes out
Mouth impulse mouth (6), the heat recovery heat exchanger tedge (1) are being provided with raw coke oven gas outlet impulse mouth at upper end position
(10), heat exchange is connected between the heat transferring medium entrance impulse mouth (4) and heat transferring medium import impulse ozzle (12-5)
Medium inlet pressure guiding pipe (5) connects between heat transferring medium outlet impulse mouth (6) and heat transferring medium outlet impulse ozzle (12-8)
It connects and is provided with heat transferring medium outlet pressure guiding pipe (7), raw coke oven gas outlet impulse mouth (10) and raw coke oven gas export impulse ozzle
Raw coke oven gas outlet pressure guiding pipe (11) is connected between (14-8).
2. a kind of series connection double base according to claim 1 protects raw coke oven gas heat recovery heat exchanger tedge, feature exists
In: second piston formula spool (14-3) lower end is connected with third plunger shaft (14-4), on the third plunger shaft (14-4)
It is provided with raw coke oven gas entrance impulse ozzle (14-5), the heat recovery heat exchanger tedge (1) sets at lower end position
It is equipped with raw coke oven gas entrance impulse mouth (8), between the raw coke oven gas entrance impulse mouth (8) and raw coke oven gas entrance impulse ozzle (14-5)
It is connected with raw coke oven gas entrance pressure guiding pipe (9).
3. a kind of series connection double base according to claim 1 protects raw coke oven gas heat recovery heat exchanger tedge, feature exists
In: the check valve (13) installed in the same direction with heat transferring medium is provided at the heat exchange cold medium outlet (3).
4. a kind of series connection double base according to claim 1 protects raw coke oven gas heat recovery heat exchanger tedge, feature exists
In: it is provided with the first balancing spring (12-7) in the second piston chamber (12-6), setting in the 4th plunger shaft (14-6)
There is the second balancing spring (14-7).
5. a kind of series connection double base according to claim 1 protects raw coke oven gas heat recovery heat exchanger tedge, feature exists
In: down big up small horn mouth is provided on the balanced valve piston valve core (12-3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916347.3A CN110499168A (en) | 2019-09-26 | 2019-09-26 | A kind of series connection double base protection raw coke oven gas heat recovery heat exchanger tedge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910916347.3A CN110499168A (en) | 2019-09-26 | 2019-09-26 | A kind of series connection double base protection raw coke oven gas heat recovery heat exchanger tedge |
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| CN110499168A true CN110499168A (en) | 2019-11-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT278862B (en) * | 1967-08-24 | 1970-02-10 | Waagner Biro Ag | Gas heated heat exchanger |
| EP0073498A2 (en) * | 1981-08-28 | 1983-03-09 | Nippon Steel Corporation | A method for drying coking coals to be charged in a coke oven |
| AU2008219347A1 (en) * | 2007-09-28 | 2009-04-23 | Woodside Energy Limited | Linked LNG production facility |
| CN103131432A (en) * | 2013-02-27 | 2013-06-05 | 北京旭阳化工技术研究院有限公司 | Method for recovering waste heat from coke oven raw gas |
| CN104946272A (en) * | 2014-03-28 | 2015-09-30 | 宝山钢铁股份有限公司 | Waste heat recovery device for coke oven crude gas and combined-type two-level heat extraction method |
| WO2018076964A1 (en) * | 2016-10-24 | 2018-05-03 | 南京华电节能环保设备有限公司 | Straight fin for device for recovering and removing waste heat of raw coke oven gas in riser of coke oven, and heat removal device |
| CN210945483U (en) * | 2019-09-26 | 2020-07-07 | 葛霖 | Ascending pipe of serial double-element protection crude gas waste heat recovery heat exchanger |
-
2019
- 2019-09-26 CN CN201910916347.3A patent/CN110499168A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT278862B (en) * | 1967-08-24 | 1970-02-10 | Waagner Biro Ag | Gas heated heat exchanger |
| EP0073498A2 (en) * | 1981-08-28 | 1983-03-09 | Nippon Steel Corporation | A method for drying coking coals to be charged in a coke oven |
| AU2008219347A1 (en) * | 2007-09-28 | 2009-04-23 | Woodside Energy Limited | Linked LNG production facility |
| CN103131432A (en) * | 2013-02-27 | 2013-06-05 | 北京旭阳化工技术研究院有限公司 | Method for recovering waste heat from coke oven raw gas |
| CN104946272A (en) * | 2014-03-28 | 2015-09-30 | 宝山钢铁股份有限公司 | Waste heat recovery device for coke oven crude gas and combined-type two-level heat extraction method |
| WO2018076964A1 (en) * | 2016-10-24 | 2018-05-03 | 南京华电节能环保设备有限公司 | Straight fin for device for recovering and removing waste heat of raw coke oven gas in riser of coke oven, and heat removal device |
| CN210945483U (en) * | 2019-09-26 | 2020-07-07 | 葛霖 | Ascending pipe of serial double-element protection crude gas waste heat recovery heat exchanger |
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