CN110440626A - Ammonia still process column overhead ammonia steam heat recovery system and coking process system - Google Patents
Ammonia still process column overhead ammonia steam heat recovery system and coking process system Download PDFInfo
- Publication number
- CN110440626A CN110440626A CN201910837067.3A CN201910837067A CN110440626A CN 110440626 A CN110440626 A CN 110440626A CN 201910837067 A CN201910837067 A CN 201910837067A CN 110440626 A CN110440626 A CN 110440626A
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- Prior art keywords
- ammonia
- steam
- generator
- column overhead
- ammonia steam
- Prior art date
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 520
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 262
- 238000000034 method Methods 0.000 title claims abstract description 85
- 238000011084 recovery Methods 0.000 title claims abstract description 48
- 238000004939 coking Methods 0.000 title claims abstract description 25
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 230000029142 excretion Effects 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 46
- 239000002918 waste heat Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 7
- 239000000908 ammonium hydroxide Substances 0.000 claims description 7
- 239000000571 coke Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 238000003763 carbonization Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 230000003020 moisturizing effect Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 229940059936 lithium bromide Drugs 0.000 description 36
- 239000003507 refrigerant Substances 0.000 description 9
- 239000006096 absorbing agent Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Separation By Absorption (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a kind of ammonia still process column overhead ammonia steam heat recovery system and coking process systems, residual neat recovering system includes ammonia still and ammonia cooler, ammonia steam (vapor) outlet is provided on the ammonia still, the residual neat recovering system further includes lithium bromide absorption-type machine unit, the ammonia steam (vapor) outlet is connected to the generator of the lithium bromide absorption-type machine unit, ammonia excretion mouth is provided on the generator, into the generator ammonia steam cool down in the generator after be discharged through the ammonia excretion mouth, the lithium bromide absorption-type machine unit can run cooling condition or heating condition；And/or further include heat exchanger, the ammonia steam (vapor) outlet is connected to the heat exchanger, carries out heat exchange in the heat exchanger into the ammonia steam in the heat exchanger with hot water preparing.The ammonia still process column overhead ammonia steam heat recovery system can effectively improve energy utilization rate.
Description
Technical field
The present invention relates to coking process technical fields, return more specifically to a kind of ammonia still process column overhead ammonia steam waste heat
Receipts system and coking process system.
Background technique
As shown in Figure 1, equipment used in the remained ammonia ammonia distillation process of the prior art includes Steam reboiler 01, ammonia still
02, dephlegmator 03, gas-liquid separator 04 and ammonia cooler 05.In the prior art, the remained ammonia of coking process enters ammonia still
Afterwards, after heating by the steam that Steam reboiler generates, after the ammonia steam of generation enters dephlegmator cooling, gas-liquid separation is entered back into
After device carries out gaseous state or Liquid segregation, for ammonia steam by entering next process after ammonia condenser cooling, liquid passes through reflux pump
Back to ammonia still.Tower bottom waste water generally enters biochemical treatment apparatus and is handled.Wherein, the ammonia steam heat of ammonia still process column overhead
It is general cooling by cooling water, the waste of the energy is caused, energy loss is huge, greatly reduces energy utilization rate.
It is current those skilled in the art's urgent problem in conclusion how to effectively improve energy utilization rate.
Summary of the invention
In view of this, the first purpose of this invention is to provide a kind of ammonia still process column overhead ammonia steam heat recovery system,
The structure of the ammonia still process column overhead ammonia steam heat recovery system, which designs, can effectively improve energy utilization rate, and of the invention second
A purpose is to provide a kind of coking process system including above-mentioned ammonia still process column overhead ammonia steam heat recovery system.
In order to reach above-mentioned first purpose, the invention provides the following technical scheme:
A kind of ammonia still process column overhead ammonia steam heat recovery system, including ammonia still and ammonia cooler are arranged on the ammonia still
There is ammonia steam (vapor) outlet, further includes lithium bromide absorption-type machine unit, the hair of the ammonia steam (vapor) outlet and the lithium bromide absorption-type machine unit
Raw device connection is provided with ammonia excretion mouth on the generator, into the generator ammonia steam cool down in the generator after
It is discharged through the ammonia excretion mouth, the lithium bromide absorption-type machine unit can run cooling condition or heating condition；And/or
It further include heat exchanger, the ammonia steam (vapor) outlet is connected to the heat exchanger, into the ammonia steam in the heat exchanger
Heat exchange is carried out in the heat exchanger with hot water preparing.
It preferably, further include gas-liquid separator in above-mentioned ammonia still process column overhead ammonia steam heat recovery system, the ammonia excretion mouth
With the inlet communication of the gas-liquid separator, into the generator ammonia steam cool down in the generator after through the row
Ammonia mouth drains into the gas-liquid separator, and the liquid outlet of the gas-liquid separator is connected to the ammonia still, the gas-liquid point
Inlet communication from the gas vent of device and the ammonia cooler.
Preferably, in above-mentioned ammonia still process column overhead ammonia steam heat recovery system, the liquid outlet of the gas-liquid separator with
Reflux pump is additionally provided on pipeline between the ammonia still.
It preferably, further include dephlegmator in above-mentioned ammonia still process column overhead ammonia steam heat recovery system, the ammonia steam (vapor) outlet
It is connected to by pipeline with the dephlegmator, generator and heat exchanger.
Preferably, in above-mentioned ammonia still process column overhead ammonia steam heat recovery system, the ammonia steam (vapor) outlet and the dephlegmator
Between be provided with valve.
It preferably, further include Steam reboiler in above-mentioned ammonia still process column overhead ammonia steam heat recovery system, the ammonia still
Interior ammonium hydroxide, which enters after the Steam reboiler is thermally formed ammonia steam, returns ammonia still.
It preferably, further include connecting with the generator ammonia excretion mouth in above-mentioned ammonia still process column overhead ammonia steam heat recovery system
Logical pumping coagulates device, water-ring vacuum pump or air-introduced machine.
A kind of coking process system, including coke furnace carbonization chamber, bridge tube, gas collecting tube, defecator and primary cooler further include as above
Ammonia still process column overhead ammonia steam heat recovery system described in any one of stating.
Preferably, in above-mentioned coking process system, the ammonia still process column overhead ammonia steam heat recovery system includes lithium bromide
Absorption installation, the lithium bromide absorption-type machine unit produce cold water when being in cooling condition, and the cold water produced is for flowing into institute
Primary cooler is stated with the cooling for low-temperature zone in primary cooler technique.
Preferably, in above-mentioned coking process system, the ammonia still process column overhead ammonia steam heat recovery system includes lithium bromide
Absorption installation, the hot water preparing when lithium bromide absorption-type machine unit is in heating condition, the hot water produced is for heating, doing
The preheating of quenching deaerated water, waste heat boiler moisturizing.
It preferably, further include taking out solidifying device, water-ring vacuum pump or air-introduced machine in above-mentioned coking process system.
Ammonia still process column overhead ammonia steam heat recovery system provided by the invention includes ammonia still, ammonia cooler and lithium bromide absorption
Formula unit is wherein provided with ammonia steam (vapor) outlet on ammonia still, the ammonia steam (vapor) outlet and lithium bromide absorption-type machine unit on ammonia still
Generator is connected to, and is provided with ammonia excretion mouth on generator, ammonia excretion mouth is connected to ammonia cooler, and lithium bromide absorption-type machine unit can run system
Cold operating condition and heating condition.When lithium bromide absorption-type machine unit is in cooling condition, it can produce cold water, suction-type lithium bromide
Unit is in heating condition Shi Qike with hot water preparing.
There is ammon entry hole and ammonia excretion mouth, ammonia steam enters generator through ammon entry hole, and ammonia steam is as driving i.e. on generator
Heat source drives lithium bromide absorption-type machine unit operation, and cold water can be produced when lithium bromide absorption-type machine unit may be at cooling condition,
Also it may be at heating condition with hot water preparing.Specifically, lithium bromide can be selected to inhale according to area, season or actual demand
Receipts formula unit is in cooling condition or heating condition.For example, northern area winter is more with hot water, northern winter be can choose
Heating condition, southern area summer is more with cold water, and southern summer can choose cooling condition.In this way, recycled from
The ammonia steam waste heat of ammonia still process column overhead discharge, avoids the waste of the energy, substantially increases energy utilization rate, while sufficiently meeting
Client's hot-cool demand.
Preferably, above-mentioned ammonia still process column overhead ammonia steam heat recovery system further includes gas-liquid separator, the row on generator
The inlet communication of ammonia mouth and gas-liquid separator, into generator ammonia steam cool down in generator after through ammonia excretion mouth drain into gas-liquid
In separator.The liquid outlet of gas-liquid separator is connected to ammonia still, the import of the gas vent and ammonia cooler of gas-liquid separator
Connection.
In order to reach above-mentioned second purpose, the present invention also provides a kind of coking process system, the coking process systems
Including any of the above-described kind of ammonia still process column overhead ammonia steam heat recovery system.Due to above-mentioned ammonia still process column overhead ammonia steam heat recovery
System has above-mentioned technique effect, and the coking process system with the ammonia still process column overhead ammonia steam heat recovery system should also have
Corresponding technical effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the remained ammonia ammonia distillation process of the prior art；
Fig. 2 is the schematic diagram that coking process system provided in an embodiment of the present invention is in cooling condition；
Fig. 3 is the signal that ammonia still process column overhead ammonia steam heat recovery system provided in an embodiment of the present invention is in cooling condition
Figure；
Fig. 4 is the schematic diagram that coking process system provided in an embodiment of the present invention is in heating condition；
Fig. 5 is the signal that ammonia still process column overhead ammonia steam heat recovery system provided in an embodiment of the present invention is in heating condition
Figure；
Fig. 6 be another embodiment of the present invention provides coking process system be in the schematic diagram of heating condition；
Fig. 7 be another embodiment of the present invention provides ammonia still process column overhead ammonia steam heat recovery system be in heating condition
Schematic diagram.
In Fig. 1:
01- Steam reboiler, 02- ammonia still, 03- dephlegmator, 04- gas-liquid separator, 05- ammonia cooler；
In Fig. 2-Fig. 7:
1- coke furnace carbonization chamber, 2- gas collecting tube, 3- primary cooler, 4- defecator, 5- remained ammonia pump, 6- ammonium hydroxide heat exchanger, 7-
Waste water pump, 8- Steam reboiler, 9- ammonia still, 10- reflux pump, 11- dephlegmator, 12- gas-liquid separator, 13- ammonia cooler, 14-
Lithium bromide absorption-type machine unit, 15- heat exchanger.
Specific embodiment
The first purpose of this invention is to provide a kind of ammonia still process column overhead ammonia steam heat recovery system, the ammonia still tower
The structure design of top ammonia steam heat recovery system can effectively improve energy utilization rate, and second object of the present invention is to mention
For a kind of coking process system including above-mentioned ammonia still process column overhead ammonia steam heat recovery system.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", " left side " and " right side " etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplifies
Description, rather than the position of indication or suggestion meaning or element must have particular orientation, be constituted and operated with specific orientation,
Therefore it should not be understood as limitation of the invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance.
Fig. 2-Fig. 5 is please referred to, the ammonia still process column overhead ammonia steam heat recovery system that an embodiment of the present invention provides includes
Ammonia still 9, ammonia cooler 13 and lithium bromide absorption-type machine unit 14, are wherein provided with ammonia steam (vapor) outlet on ammonia still 9, on ammonia still 9
Ammonia steam (vapor) outlet be connected to the generator of lithium bromide absorption-type machine unit 14, ammonia excretion mouth, and ammonia excretion mouth are provided on generator
With the inlet communication of ammonia cooler, into generator ammonia steam cool down in generator after drain into ammonia cooler through ammonia excretion mouth.Bromine
Cooling condition and heating condition can be run by changing lithium-absorbing formula unit 14.When lithium bromide absorption-type machine unit 14 is in cooling condition
It can produce cold water, and lithium bromide absorption-type machine unit 14 is in heating condition Shi Qike with hot water preparing.
There is ammon entry hole and ammonia excretion mouth, ammonia steam enters generator through ammon entry hole, and ammonia steam is as driving i.e. on generator
Heat source drives lithium bromide absorption-type machine unit 14 to run, and can produce when lithium bromide absorption-type machine unit 14 may be at cooling condition cold
Water may be at heating condition also with hot water preparing.
Specifically, lithium bromide absorption-type machine unit 14 can be selected to be in cooling condition according to area, season or actual demand
Or heating condition.For example, northern area winter is more with hot water, northern winter can choose heating condition, southern area summer
It is more with cold water, and southern summer can choose cooling condition.In this way, having recycled the ammonia being discharged from 9 tower top of ammonia still
Steam waste heat avoids the waste of the energy, substantially increases energy utilization rate, while sufficiently meeting client's hot-cool demand.
It should be noted that lithium bromide absorption-type machine unit includes evaporator, absorber, condenser and generator altogether at this.
Certain lithium bromide absorption-type machine unit can also include heat exchanger, pump and other attachmentes etc..
When running cooling condition, the ammonia steam of 9 tower top of ammonia still discharge enters generator as driving heat source, in generator
Interior heating lithium bromide weak solution simultaneously generates refrigerant vapour.Refrigerant vapour enters condenser, and the water that is cooled in condenser is cooling, from
Body is condensed into liquid deutomerite stream and enters evaporator.Cryogen evaporates to produce cold water in evaporator.Vaporized cryogen is inhaled
The concentrated solution received in device is absorbed.Absorb cryogen and thinning solution (weak solution) by solution pump through over-heat-exchanger be sent into send out
Raw device.Concentrated solution enters absorber after over-heat-exchanger and weak solution carry out heat exchange, absorbs the evaporation in evaporator and generates
Refrigerant vapour.Complete entire circulation.
When running heating condition, the ammonia steam of 9 tower top of ammonia still discharge enters generator as driving heat source, in generator
Interior heating lithium bromide weak solution simultaneously generates refrigerant vapour.Refrigerant vapour enters condenser, and heating flows through in condenser thermal transfer pipe
Hot water itself is condensed into liquid deutomerite stream and enters evaporator.Water as refrigerant absorbs the heat for flowing through remaining hot water in heat-transfer pipe of evaporator,
Unit is flowed out after reducing waste heat coolant-temperature gage, water as refrigerant is vaporized into refrigerant vapour after absorbing heat, into absorber.By generator
Lithium-bromide solution after concentration sprays after returning to absorber, absorbs the refrigerant vapour to come from evaporator, and release heat, heats
Flow through the hot water of absorber heat-transfer pipe.After hot water flows through absorber, condenser heating, it is conveyed to hot cell, completion entirely follows
Ring.
In another embodiment, ammonia still process column overhead ammonia steam heat recovery system includes ammonia still 9, ammonia cooler 13, bromination
Lithium-absorbing formula unit 14 and heat exchanger 15, ammonia steam (vapor) outlet are connected to heat exchanger 15 and generator, when ammonia steam enters heat exchange
When device 15, heat exchange is carried out in heat exchanger 15 into the ammonia steam in heat exchanger 15 with hot water preparing.I.e. ammonia steam enters and changes
Heat exchange is carried out with water after hot device 15, to achieve the purpose that hot water preparing.In this way, equally having recycled from 9 tower top of ammonia still
The ammonia steam waste heat of discharge, avoids the waste of the energy, substantially increases energy utilization rate.When ammonia steam enters generator,
Identical as the first above-mentioned embodiment, details are not described herein.
As shown in figure 4, in another embodiment of the invention, ammonia still process column overhead ammonia steam heat recovery system includes steaming
Ammonia tower 9, ammonia cooler 13 and heat exchanger 15, ammonia steam (vapor) outlet are connected to heat exchanger 15, are being changed into the ammonia steam in heat exchanger 15
Heat exchange is carried out in hot device 15 with hot water preparing.I.e. ammonia steam, which enters after heat exchanger 15, carries out heat exchange with water, is produced with reaching
The purpose of hot water.In this way, equally having recycled the ammonia steam waste heat being discharged from 9 tower top of ammonia still, the waste of the energy is avoided,
Substantially increase energy utilization rate.
Preferably, above-mentioned ammonia still process column overhead ammonia steam heat recovery system further includes gas-liquid separator 12, on generator
The inlet communication of ammonia excretion mouth and gas-liquid separator 12, into generator ammonia steam cool down in generator after drain into through ammonia excretion mouth
In gas-liquid separator 12.The liquid outlet of gas-liquid separator 12 is connected to ammonia still 9, the gas vent and ammonia of gas-liquid separator 12
The inlet communication of cooler 13, naturally it is also possible to be not provided with gas-liquid separator 12, be not limited thereto.
In the above-described embodiments, ammonia still process column overhead ammonia steam heat recovery system further includes dephlegmator 11, ammonia steam (vapor) outlet
It is connected to dephlegmator 11, generator and heat exchanger.The outlet of dephlegmator 11 and the inlet communication of gas-liquid separator 12.In this way,
Can choose ammonia steam and enter dephlegmator 11, generator or heat exchanger 15 can choose when needing to produce cold water or warm water
Ammonia steam is set to enter generator.When needing to produce high-temperature-hot-water, can choose makes ammonia steam enter heat exchanger 15.Or work as bromine
When changing lithium-absorbing formula unit 14 and breaking down, ammonia steam can be made to enter dephlegmator 11, ammonia steam in dephlegmator 11 with cooling
It is flow in gas-liquid separator 12 again after water heat exchange.
Further, for the ease of control, it is provided with valve between ammonia steam (vapor) outlet and dephlegmator 11, in lithium bromide absorption
When formula unit 14 or heat exchanger 15 work normally, above-mentioned valve is closed.It breaks down or is not required in lithium bromide absorption-type machine unit 14
When wanting cooling and warming, above-mentioned valve opening.
Preferably, above-mentioned ammonia still process column overhead ammonia steam heat recovery system further includes Steam reboiler 8, in ammonia still 9
Ammonium hydroxide, which enters after Steam reboiler 8 is thermally formed ammonia steam, returns ammonia still 9.So by Steam reboiler 8 to ammonia still 9
Interior ammonium hydroxide heating, to generate more ammonia steam.
It, can also be in gas-liquid separation in order to enable the ammonium hydroxide in gas-liquid separator 12 to be smoothly back in ammonia still 9
Reflux pump 10 is set on the pipeline between the liquid outlet and ammonia still 9 of device 12.
Above-mentioned lithium bromide absorption-type machine unit is when ammonia steam is negative pressure ammonia steam or micro-positive pressure ammonia steam insufficient flow, also
Device or water-ring vacuum pump or air-introduced machine can be coagulated in additional take out of generator exports, guarantee the heat transfer effect of generator.Because
Ammonia steam itself has corrosion, it is also contemplated that corresponding anti-corrosion measure.
It should be noted that the course of work of ammonia still 9, gas-liquid separator 12 and ammonia cooler 13 is, remained ammonia enters
The ammonia steam generated after ammonia still 9, ammonia steam enter gas-liquid separator 12 after cooling down in generator or heat exchanger 15 and carry out gas
State Liquid segregation, then ammonia steam is by entering next process after ammonia condenser cooling.Liquid is by flowing back into ammonia still 9.
Tower bottom waste water generally enters biochemical treatment apparatus after the extraction of waste water pump 7 and is handled.Among the above, remained ammonia is through remained ammonia
Pump 5 is back in ammonia still 9.
In addition, remained ammonia is changed in ammonium hydroxide heat exchanger 6 before entering ammonia still 9 with the waste water flowed out from ammonia still 9
Heat, to further increase capacity utilization ratio.
The ammonia still process column overhead ammonia steam heat recovery system provided in based on the above embodiment, the present invention also provides one kind
Coking process system, the coking process system include coke furnace carbonization chamber 1, bridge tube, gas collecting tube 2, defecator 4, primary cooler 3 and above-mentioned
Any one ammonia still process column overhead ammonia steam heat recovery system in embodiment.Since the coking process system uses above-mentioned implementation
Ammonia still process column overhead ammonia steam heat recovery system in example, so the beneficial effect of the coking process system please refers to above-mentioned implementation
Example.
In order to further increase energy utilization rate, ammonia still process column overhead ammonia steam heat recovery system includes suction-type lithium bromide
Unit 14 produces cold water when lithium bromide absorption-type machine unit 14 is in cooling condition, and the cold water produced can be used for flowing into just cold
Device 3 is with the cooling for low-temperature zone in 3 technique of primary cooler.
Ammonia still process column overhead ammonia steam heat recovery system includes lithium bromide absorption-type machine unit 14, lithium bromide absorption-type machine unit 14
When in heating condition, hot water preparing, the hot water produced can be used for heating, dry coke quenching deaerated water preheats, waste heat boiler is mended
Water.Certainly, the hot water produced can be also used for technique hot water, be not limited thereto.
In addition, remaining hot water can use big system process cooling water, such as 3 cooling water of primary cooler to enter suction-type lithium bromide
14 evaporator of unit, 14 absorber of lithium bromide absorption-type machine unit and condenser hot water preparing, dual-use.
It should be noted that the hot water or cold water that above-mentioned lithium bromide absorption-type machine unit 14 is produced can be used for any use at this
On the way, it is not limited to the purposes of foregoing description.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of ammonia still process column overhead ammonia steam heat recovery system, including ammonia still (9) and ammonia cooler (13), the ammonia still
(9) ammonia steam (vapor) outlet is provided on, which is characterized in that further include lithium bromide absorption-type machine unit (14), the ammonia steam (vapor) outlet with
The generator of the lithium bromide absorption-type machine unit (14) is connected to, and ammonia excretion mouth is provided on the generator, into the generator
Ammonia steam cool down in the generator after be discharged through the ammonia excretion mouth, the lithium bromide absorption-type machine unit (14) can run
Cooling condition or heating condition；And/or
It further include heat exchanger (15), the ammonia steam (vapor) outlet is connected to the heat exchanger (15), interior into the heat exchanger (15)
Ammonia steam heat exchange is carried out in the heat exchanger (15) with hot water preparing.
2. ammonia still process column overhead ammonia steam heat recovery system according to claim 1, which is characterized in that further include gas-liquid point
From device (12), the inlet communication of the ammonia excretion mouth and the gas-liquid separator (12), into the generator ammonia steam in institute
It states in generator and is drained into the gas-liquid separator (12) after cooling through the ammonia excretion mouth, the liquid of the gas-liquid separator (12)
Outlet is connected to the ammonia still (9), and the gas vent of the gas-liquid separator (12) and the import of the ammonia cooler (13) connect
It is logical.
3. ammonia still process column overhead ammonia steam heat recovery system according to claim 2, which is characterized in that the gas-liquid separation
Reflux pump (10) are additionally provided on pipeline between the liquid outlet and the ammonia still (9) of device (12).
4. ammonia still process column overhead ammonia steam heat recovery system according to claim 1, which is characterized in that further include dephlegmator
(11), the ammonia steam (vapor) outlet is connected to by pipeline with the dephlegmator (11), generator and heat exchanger (15).
5. ammonia still process column overhead ammonia steam heat recovery system according to claim 4, which is characterized in that the ammonia steam goes out
Valve is provided between mouth and the dephlegmator (11).
6. ammonia still process column overhead ammonia steam heat recovery system according to claim 1, which is characterized in that further include steam again
It boils device (8), the ammonium hydroxide in the ammonia still (9), which enters after the Steam reboiler (8) are thermally formed ammonia steam, returns ammonia still process
Tower (9).
7. ammonia still process column overhead ammonia steam heat recovery system according to claim 1, which is characterized in that further include with it is described
The pumping of generator ammonia excretion mouth connection coagulates device, water-ring vacuum pump or air-introduced machine.
8. a kind of coking process system, including coke furnace carbonization chamber (1), bridge tube, gas collecting tube (2), defecator (4) and primary cooler (3),
It is characterized in that, further including such as ammonia still process column overhead ammonia steam heat recovery system of any of claims 1-7.
9. coking process system according to claim 8, which is characterized in that the ammonia still process column overhead ammonia steam heat recovery
System includes lithium bromide absorption-type machine unit (14), and the lithium bromide absorption-type machine unit (14) produces cold water when being in cooling condition,
Its cold water produced is used to flow into the primary cooler (3) with the cooling for low-temperature zone in primary cooler (3) technique.
10. coking process system according to claim 8, which is characterized in that the ammonia still process column overhead ammonia steam waste heat returns
Receipts system includes lithium bromide absorption-type machine unit (14), and the lithium bromide absorption-type machine unit (14) produces heat when being in heating condition
Water, the hot water produced is for heating, dry coke quenching deaerated water preheats, waste heat boiler moisturizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837067.3A CN110440626A (en) | 2019-09-05 | 2019-09-05 | Ammonia still process column overhead ammonia steam heat recovery system and coking process system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837067.3A CN110440626A (en) | 2019-09-05 | 2019-09-05 | Ammonia still process column overhead ammonia steam heat recovery system and coking process system |
Publications (1)
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