CN205892784U - Nitrobenzene strip tower heat recovery unit - Google Patents
Nitrobenzene strip tower heat recovery unit Download PDFInfo
- Publication number
- CN205892784U CN205892784U CN201620493802.5U CN201620493802U CN205892784U CN 205892784 U CN205892784 U CN 205892784U CN 201620493802 U CN201620493802 U CN 201620493802U CN 205892784 U CN205892784 U CN 205892784U
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- stripper
- heat exchanger
- steam
- nitrobenzol
- waste water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model provides a nitrobenzene strip tower heat recovery unit, relates to industry chemical industry waste water treatment field, and it includes strip tower charge pump, the strip heat exchanger, the heat exchanger is retrieved, the overhead condenser to nitrobenzene strip tower. This nitrobenzene strip tower heat recovery unit increases a recovery heat exchanger between strip tower charge pump and strip heat exchanger, dense waste water carries out the heat transfer with 105 DEG C of steam that come out from the nitrobenzene strip top of the tower steam outlet of portion in retrieving the heat exchanger after strip tower charge pump gets into the recovery heat exchanger, and dense waste water temperature rises to 70 DEG C of left and right sides by the average 50 DEG C left and right sides, retrieves a large amount of heat energy.
Description
Technical field
This utility model is related to industrial chemical field of waste water treatment, specifically a kind of Nitrobenzol stripper energy recovery
Device.
Background technology
At present, the room temperature density wastewater containing Nitrobenzol 2000-3000ppm producing in Nitrobenzol production process is through stripper
Feed pump enters stripper heat exchanger, and in this heat exchanger, the dilute waste water of Nitrobenzol with stripper outlet at bottom is lifted through heat exchange
Temperature to 50 DEG C about after, from stripper overhead enter tower, after heating, density wastewater self-nitro phenenyl stripper packing layer flows down, stripping
In tower, after reboiler heating, tower reactor temperature of liquid is 100 DEG C 110 DEG C to water, and heating steam rises in inner-tower filling material layer, waste water
With water vapour directly contact, the volatility poisonous and harmful substance in composite waste after making to heat is diffused into vapor by a certain percentage
In, thus reaching the purpose separating pollutant from waste water, reach the mesh that liquid nitrobenzene content in tower reactor is less than 200ppm
Mark.100 DEG C 105 DEG C of tower top outlet vapor (steam) temperature, enters overhead condenser, after circulating water condensing, nitro containing high concentration
The condensed fluid of benzene is to production system reuse.Dilute waste water of tower reactor extraction, through stripper heat exchanger, rises hc effluent feeding temperature, fall
After low dilute waste water drop temperature, deliver to Sewage Disposal and carry out after-treatment.
Stripper feed pump is used for the room temperature density wastewater containing Nitrobenzol 2000-3000ppm for the lifting, and stripping heat exchanger is used for
With the dilute wastewater heat exchange of Nitrobenzol of stripper outlet at bottom, Nitrobenzol stripper is used for using dirty in vapor removal waste water density wastewater
Dye thing, reboiler is heated for tower reactor waste water steaming in the Nitrobenzol and generation tower in waste water by using external steam
Upflowing vapor, drains into water pot outside reboiler steam condensed fluid.
Nitrobenzol stripper top returns production system, heat after exporting a large amount of 100 DEG C of 105 DEG C of steam circulating water condensings
Recirculated water can be entered, cause heat-energy losses.And enter the density wastewater of stripper after heating up temperature to 50 DEG C of entrance strippers,
It is heated to 100-102 DEG C through reboiler steam again, need substantial amounts of heat energy.There is heat in therefore original industrial treatment flow process
Irrational situation can be utilized, the heat that top of tower recirculated water is taken away can recycle.
Content of the invention
For solving above-mentioned technical problem, this utility model provides a kind of Nitrobenzol stripper energy recovery dress
Put, more save energy, more environmentally friendly.
For reaching above-mentioned purpose, this utility model be the technical scheme is that
A kind of Nitrobenzol stripper heat-energy recovering apparatus, it includes stripper feed pump, strips heat exchanger, and Nitrobenzol strips
Tower, reclaims heat exchanger, overhead condenser；The bottom of stripper feed pump is provided with density wastewater charging aperture, and top is provided with density wastewater and goes out
Material mouth, the left end of stripping heat exchanger is provided with density wastewater charging aperture, and lower end is provided with dilute wastewater feed mouth, and right-hand member is provided with dense after heat exchange
Waste water discharging opening, upper end is provided with dilute waste water discharging opening after heat exchange, and the left upper part of Nitrobenzol stripper is provided with dense useless after heating
Water charging aperture, bottom center is provided with dilute waste water discharging opening, and right bottom top is provided with steam inlet, and tower right lower quadrant is provided with and follows
Ring wastewater outlet, top center is provided with steam (vapor) outlet, and the right-hand member reclaiming heat exchanger is provided with steam inlet, and left upper part sets
It is equipped with steam (vapor) outlet, left end bottom is provided with density wastewater charging aperture, right-hand member bottom is provided with density wastewater discharging opening, lower end
It is provided with condensate outlet, reclaim heat exchanger bottom and connect lower liquid pipe, overhead condenser right-hand member is provided with steam inlet after heat exchange,
Left end is provided with steam condensate outlet, and overhead condenser bottom connects lower liquid pipe, is connected by pipeline between each equipment, dense
Waste pipe connects stripper feed pump density wastewater charging aperture, and it is dense that stripper feed pump density wastewater discharging opening connects recovery heat exchanger
Wastewater feed mouth, reclaims heat exchanger density wastewater discharging opening and connects stripping heat exchanger density wastewater charging aperture, strip heat exchanger
After heat exchange, density wastewater discharging opening connects density wastewater charging aperture after Nitrobenzol stripper is heated, Nitrobenzol stripper dilute waste water discharging opening
Connect stripping heat exchanger dilute wastewater feed mouth, after heat exchange, dilute waste water discharging opening connects discharge tube, Nitrobenzol stripper steam goes out
Mouth connects recovery heat exchanger steam inlet, and steam (vapor) outlet connects steam inlet after overhead condenser heat exchange, steam condensate
Outlet connects lower liquid pipe, and condensate outlet connects lower liquid pipe.
A kind of described Nitrobenzol stripper heat-energy recovering apparatus also include reboiler, the left upper part setting of reboiler
There is steam (vapor) outlet, left end bottom is provided with recycling waste water entrance, and top is provided with steam inlet, and it is cold that bottom is provided with steam
Condensate outlet, Nitrobenzol stripper steam inlet connects reboiler steam outlet, and Nitrobenzol stripper recycling waste water exports
Connect reboiler recycling waste water entrance.
Described Nitrobenzol stripper is vertical type tower, and bottom is provided with supporting plate, to huddle on supporting plate
Mode be provided with 30mm × 15mm Novel ring metal packing, stripper is divided into three sections, and the upper and lower are filler, and centre sets
It is equipped with liquid redistribution device, described liquid redistribution device includes liquid header and liquid re-distributor two parts.
Stripper is the mass transfer apparatus using the filler in tower as contact member between gas-liquid two-phase, the liquid under the filler stream of upper strata
Body, after liquid header collection, delivers to liquid re-distributor, sprays on lower floor's filler, therefore this stripping after redistribution
Tower has the advantages of production capacity is big, and separation efficiency is high, pressure drop is little, and liquid holdup is little, operating flexibility is big.
This utility model increases a recovery heat exchanger between stripper feed pump and stripping heat exchanger, and density wastewater is through vapour
Stripper feed pump enters after reclaiming heat exchanger, is returning with 105 DEG C of steam out from Nitrobenzol stripper top steam (vapor) outlet 35
Receive in heat exchanger and carry out heat exchange, density wastewater temperature rises to 70 DEG C about by average 50 DEG C about, reclaim a large amount of heat energy.Therefore again
The steam valve aperture of boiling device reduces 30%, reduces 150 kilograms of low-pressure steam consumption per hour, annual saving low-pressure steam 1200
Ton, is worth 200,000 yuan；Overhead condenser recirculated water valve opening reduces 60%, enters heat energy in recirculated water and is greatly decreased, alleviates
The thermic load of circulation, decreases waste.
Brief description
Accompanying drawing 1 is schematic flow sheet of the present utility model.
1. stripper feed pump；2. strip heat exchanger；3. Nitrobenzol stripper；4. reboiler；5. reclaim heat exchanger；6. tower
Top condenser；7. steam；8. waste discharge；9. condensed fluid；10. density wastewater；11. steam condensates.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in detail:
As illustrated, this Nitrobenzol stripper heat-energy recovering apparatus, including stripper feed pump 1, strip heat exchanger 2, nitre
Base benzene stripper 3, reclaims heat exchanger 5, overhead condenser 6；The bottom of stripper feed pump 1 is provided with density wastewater charging aperture, top
It is provided with density wastewater discharging opening, the left end of stripping heat exchanger 2 is provided with density wastewater charging aperture, and lower end is provided with dilute wastewater feed mouth, right
End is provided with density wastewater discharging opening after heat exchange, and upper end is provided with dilute waste water discharging opening after heat exchange, and the left upper part of Nitrobenzol stripper 3 sets
It is equipped with density wastewater charging aperture after heating, bottom center is provided with dilute waste water discharging opening, and right bottom top is provided with steam inlet, tower
Right lower quadrant is provided with recycling waste water outlet, and top center is provided with steam (vapor) outlet, and the right-hand member of recovery heat exchanger 5 is provided with steam and enters
Mouthful, left upper part is provided with steam (vapor) outlet, and left end bottom is provided with density wastewater charging aperture, and right-hand member bottom is provided with dense useless
Water discharging opening, lower end is provided with condensate outlet, reclaims heat exchanger 5 bottom and connects lower liquid pipe, overhead condenser 6 right-hand member is arranged
Have steam inlet after heat exchange, left end is provided with steam condensate outlet, overhead condenser 6 bottom connects lower liquid pipe, each equipment it
Between connected by pipeline, density wastewater pipeline connect stripper feed pump density wastewater charging aperture, stripper feed pump density wastewater discharging
Mouth connects recovery heat exchanger density wastewater charging aperture, and recovery heat exchanger density wastewater discharging opening connection strips heat exchanger density wastewater and enters
Material mouth, after stripping heat exchanger heat exchange, density wastewater discharging opening connects density wastewater charging aperture after Nitrobenzol stripper is heated, Nitrobenzol
Stripper dilute waste water discharging opening connects stripping heat exchanger dilute wastewater feed mouth, and after heat exchange, dilute waste water discharging opening connects discharge tube,
Nitrobenzol stripper steam (vapor) outlet connects recovery heat exchanger steam inlet, and steam (vapor) outlet steams after connecting overhead condenser heat exchange
Vapour entrance, steam condensate outlet connects lower liquid pipe, and condensate outlet connects lower liquid pipe.
A kind of described Nitrobenzol stripper heat-energy recovering apparatus also include reboiler 4, and the left upper part of reboiler 4 sets
It is equipped with steam (vapor) outlet, left end bottom is provided with recycling waste water entrance, and top is provided with steam inlet, and bottom is provided with steam
Condensate outlet, Nitrobenzol stripper steam inlet connects reboiler steam outlet, and Nitrobenzol stripper recycling waste water goes out
Mouth connection reboiler recycling waste water entrance.
This Nitrobenzol stripper heat-energy recovering apparatus work process: produce Nitrobenzol during, generation contain nitro
The room temperature density wastewater of benzene 2000-3000ppm enters through stripper feed pump 1 and reclaims after heat exchanger 5, and from Nitrobenzol stripper 3
Overhead vapor exports 35 105 DEG C of steam out and carries out heat exchange in reclaiming heat exchanger 5, and density wastewater temperature is by average 50 DEG C about
Rise to 75 DEG C about, reclaim a large amount of heat energy, dilute useless subsequently into the Nitrobenzol with stripper outlet at bottom in stripping heat exchanger 2
Water heat exchange, enters tower from stripper left upper part after heat exchange, after heating, density wastewater self-nitro phenenyl stripper 3 packing layer flows down, vapour
In stripper, after reboiler 4 heating, tower reactor temperature of liquid is 100 DEG C 110 DEG C to water, and heating steam rises in inner-tower filling material layer,
Waste water and water vapour directly contact, the volatility poisonous and harmful substance in composite waste after making to heat is diffused into water by a certain percentage
In steam, thus reaching the purpose separating pollutant from waste water, reaching liquid nitrobenzene content in tower reactor and being less than 200ppm
Target.100 DEG C 105 DEG C of tower top outlet vapor (steam) temperature, enters overhead condenser, after circulating water condensing, containing high concentration
The condensed fluid of Nitrobenzol is to production system reuse.Dilute waste water of tower reactor extraction, through stripper heat exchanger 2, rises hc effluent charging temperature
Degree, after reducing dilute waste water drop temperature, delivers to Sewage Disposal and carries out after-treatment.
Nitrobenzol stripper work process: the density wastewater liquid after heating sprays filler from tower top through liquid distribution trough
On, and flow down along filler surface, more thermogenetic waste steam is added from bottom of towe feeding by reboiler external steam, through distribution apparatus
Rise in packing layer after distribution, be in the space that adverse current continues through packing layer with dropping liq, on filler surface, gas-liquid two
Phase close contact carries out mass transfer, and the volatility poisonous and harmful substance in composite waste after making to heat is diffused into water by a certain percentage and steams
In gas, thus reaching the purpose separating pollutant from waste water, reaching liquid nitrobenzene content in tower reactor and being less than 200ppm's
Target.
Stripper feed pump is used for the room temperature density wastewater containing Nitrobenzol 2000-3000ppm for the lifting, and stripping heat exchanger is used for
With the dilute wastewater heat exchange of Nitrobenzol of stripper outlet at bottom, Nitrobenzol stripper is used for using dirty in vapor removal waste water density wastewater
Dye thing, reboiler is heated for tower reactor waste water steaming in the Nitrobenzol and generation tower in waste water by using external steam
Upflowing vapor, drains into water pot outside reboiler steam condensed fluid.
This utility model on the basis of original Nitrobenzol stripper heat-energy recovering apparatus, in stripper feed pump and stripping
Increase a recovery heat exchanger, density wastewater enters through stripper feed pump and reclaims after heat exchanger, and from Nitrobenzol between heat exchanger
Stripper top steam (vapor) outlet 35 105 DEG C of steam out carry out heat exchange in reclaiming heat exchanger, and density wastewater temperature is by average 50
DEG C about rise to 70 DEG C about, reclaim a large amount of heat energy.
Claims (2)
1. a kind of Nitrobenzol stripper heat-energy recovering apparatus it is characterised in that: include stripper feed pump, strip heat exchanger, nitre
Base benzene stripper, reclaims heat exchanger, overhead condenser；The bottom of stripper feed pump is provided with density wastewater charging aperture, and top is provided with
Density wastewater discharging opening, the left end of stripping heat exchanger is provided with density wastewater charging aperture, and lower end is provided with dilute wastewater feed mouth, and right-hand member is provided with
Density wastewater discharging opening after heat exchange, upper end is provided with dilute waste water discharging opening after heat exchange, and the left upper part of Nitrobenzol stripper is provided with and adds
Density wastewater charging aperture after temperature, bottom center is provided with dilute waste water discharging opening, and right bottom top is provided with steam inlet, tower right lower quadrant
It is provided with recycling waste water outlet, top center is provided with steam (vapor) outlet, and the right-hand member reclaiming heat exchanger is provided with steam inlet, left
End top is provided with steam (vapor) outlet, and left end bottom is provided with density wastewater charging aperture, and right-hand member bottom is provided with density wastewater discharging
Mouthful, lower end is provided with condensate outlet, reclaims heat exchanger bottom and connects lower liquid pipe, after overhead condenser right-hand member is provided with heat exchange
Steam inlet, left end is provided with steam condensate outlet, and overhead condenser bottom connects lower liquid pipe, passes through pipe between each equipment
Line connects, and density wastewater pipeline connects stripper feed pump density wastewater charging aperture, and stripper feed pump density wastewater discharging opening connects back to
Receive heat exchanger density wastewater charging aperture, reclaim heat exchanger density wastewater discharging opening and connect stripping heat exchanger density wastewater charging aperture,
After stripping heat exchanger heat exchange, density wastewater discharging opening connects density wastewater charging aperture after Nitrobenzol stripper is heated, and Nitrobenzol stripper is dilute
Waste water discharging opening connects stripping heat exchanger dilute wastewater feed mouth, and after heat exchange, dilute waste water discharging opening connects discharge tube, Nitrobenzol vapour
Stripper steam (vapor) outlet connects recovery heat exchanger steam inlet, and steam (vapor) outlet connects steam inlet after overhead condenser heat exchange,
Steam condensate outlet connects lower liquid pipe, and condensate outlet connects lower liquid pipe.
2. a kind of Nitrobenzol stripper heat-energy recovering apparatus according to claim 1 it is characterised in that: also include boiling again
Device, the left upper part of reboiler is provided with steam (vapor) outlet, and left end bottom is provided with recycling waste water entrance, and top is provided with steaming
Vapour entrance, bottom is provided with steam condensate outlet, and Nitrobenzol stripper steam inlet connects reboiler steam outlet,
The outlet of Nitrobenzol stripper recycling waste water connects reboiler recycling waste water entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620493802.5U CN205892784U (en) | 2016-05-27 | 2016-05-27 | Nitrobenzene strip tower heat recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620493802.5U CN205892784U (en) | 2016-05-27 | 2016-05-27 | Nitrobenzene strip tower heat recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205892784U true CN205892784U (en) | 2017-01-18 |
Family
ID=57766378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620493802.5U Active CN205892784U (en) | 2016-05-27 | 2016-05-27 | Nitrobenzene strip tower heat recovery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205892784U (en) |
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2016
- 2016-05-27 CN CN201620493802.5U patent/CN205892784U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210421 Address after: Room 2304, 1200 Pudong Avenue, Shanghai Pudong New Area Free Trade Pilot Area Patentee after: SENNICS Co.,Ltd. Address before: 271411, Tai'an County, Shandong province Ningyang county kiln economic and Technological Development Zone Patentee before: SHANDONG HUAHONG CHEMICAL Co.,Ltd. |