CN105967253A - Evaporation process and device of desulfurized wastewater cooling tower - Google Patents

Evaporation process and device of desulfurized wastewater cooling tower Download PDF

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Publication number
CN105967253A
CN105967253A CN201610339614.1A CN201610339614A CN105967253A CN 105967253 A CN105967253 A CN 105967253A CN 201610339614 A CN201610339614 A CN 201610339614A CN 105967253 A CN105967253 A CN 105967253A
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CN
China
Prior art keywords
cooling tower
desulfurization wastewater
heat exchanger
tower
plastic heat
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610339614.1A
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Chinese (zh)
Inventor
陈念军
钟方明
涂志宏
焦洪波
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AE&E NANJING TECHNOLOGY Co Ltd
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AE&E NANJING TECHNOLOGY Co Ltd
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Application filed by AE&E NANJING TECHNOLOGY Co Ltd filed Critical AE&E NANJING TECHNOLOGY Co Ltd
Priority to CN201610339614.1A priority Critical patent/CN105967253A/en
Publication of CN105967253A publication Critical patent/CN105967253A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048Purification of waste water by evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents

Abstract

The invention relates to the technical field of desulfurized wastewater treatment and particularly relates to an evaporation process and device of a desulfurized wastewater cooling tower in wet-process desulfurization of a thermal power plant and an industrial kiln. Desulfurized wastewater is collected to a cooling tower water tank; the desulfurized wastewater in the cooling tower water tank is pumped to a plastic heat exchanger in a flue at the front part of a desulfurization tower through a cooling tower circulating pump; the desulfurized wastewater is heated in the plastic heat exchanger to a certain temperature and then is conveyed into a cooling tower; the desulfurized wastewater is sprayed in a cooling tower nozzle to form fine particles and falls off; steam is evaporated from the upper part of the cooling tower and the concentrated desulfurized wastewater enters a cooling tower water tank; the desulfurized wastewater is continuously heated and evaporated according to a flow of an evaporation process; the circulating flow of a cooling tower circulating pump is 5 to 80 times as much as that the yield of the desulfurized wastewater; finally, the desulfurized wastewater can be concentrated to one fifth of the original volume; and the evaporation process is low in energy consumption and simple and feasible in production process.

Description

A kind of desulfurization wastewater cooling tower evaporation technology and device
Technical field
The present invention relates to desulfurization wastewater processing technology field, in particular it relates to in thermal power plant, Industrial Stoves wet desulphurizationA kind of desulfurization wastewater cooling tower evaporation technology and device
Background technology
The waste water produced in thermal power plant, Industrial Stoves wet desulphurization processes and is very unlikely to, and comparing method thoroughly at present has employing evaporative crystallization technique, and application is less at present;Also there is employing drying process with atomizing, at present almost without application;Also having the flue (after air preheater) that desulfurization wastewater sprays into higher temperature, make the salinity in desulfurization wastewater be evaporated into powder salt and together caught by cleaner unit with flue dust, application achievement is the most few.
It is badly in need of at present wanting the processing method of a kind of cheap and simple to process desulfurization wastewater.
Summary of the invention
The technical problem to be solved in the present invention is: overcome deficiency of the prior art, it is provided that a kind of technique simple desulfurization wastewater cooling tower evaporation technology and device.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows:
A kind of desulfurization wastewater cooling tower evaporation technology, described technique comprises the following steps:
S1, by desulfurization wastewater collect to pond of cooling tower;
S2, cooling tower circulating pump are by the plastic heat exchanger in the desulfurization wastewater pump in pond of cooling tower to desulfurizing tower front portion flue;
S3, desulfurization wastewater are heated to uniform temperature in plastic heat exchanger, then proceed to cooling tower, spray into fine grained and fall from nozzle for cooling tower, and steam evaporates from cooling tower top, and the desulfurization wastewater of concentration enters pond of cooling tower;
Constantly heating by above-mentioned flow process and evaporate, 5 to 80 times that the flow of circulation is desulfurization wastewater yield beaten by cooling tower circulating pump, and 1/5th or direct crystallization that last desulfurization wastewater can concentrate as original volume go out salt.
Further, described desulfurization wastewater uses flue gas in plastic heat exchanger.
Further, described desulfurization wastewater is heated to 50-90 DEG C in flue.
A kind of desulfurization wastewater cooling tower evaporation technology uses device, and including cooling tower and desulfurizing tower, described desulfurizing tower connects desulfurizing tower front portion flue, is provided with plastic heat exchanger in the flue of described desulfurizing tower front portion;
Bottom described cooling tower, pond of cooling tower is installed, described pond of cooling tower connects desulfurization wastewater filling pipe, it is connected by inlet channel between described pond of cooling tower and plastic heat exchanger, cooling tower circulating pump is installed on described inlet channel, described plastic heat exchanger is connected to cooling tower upper end by outlet conduit, and described outlet conduit is positioned on the pipeline within cooling tower and is provided with nozzle for cooling tower.
Technical scheme is used to provide the benefit that:
Constantly heating according to the flow process of the evaporation technology of the present invention and evaporate, 5 to 80 times that the flow of circulation is desulfurization wastewater yield beaten by cooling tower circulating pump, and 1/5th or direct crystallization that last desulfurization wastewater can concentrate as original volume go out salt;Energy consumption is low, production technology is simple.
Accompanying drawing explanation
Below in conjunction withAccompanying drawingThe invention will be further described.
Figure 1Structural representation for the present inventionFigure
In figure: 1 cooling tower, 2 nozzle for cooling towers, 3 pond of cooling tower, 4 desulfurization wastewater filling pipes, 5 cooling tower circulating pumps, 6 plastic heat exchangers, 7 desulfurizing tower front portion flues, 8 desulfurizing towers.
Detailed description of the invention
Below in conjunction withAccompanying drawingThe invention will be further described with detailed description of the invention.
A kind of desulfurization wastewater cooling tower evaporation technology, described technique comprises the following steps:
S1, by desulfurization wastewater collect to pond of cooling tower 3;
S2, cooling tower circulating pump 5 are by the plastic heat exchanger 6 in the desulfurization wastewater pump in pond of cooling tower 3 to desulfurizing tower front portion flue 7;
S3, desulfurization wastewater are heated to uniform temperature in plastic heat exchanger 6, then proceed to cooling tower 1, spray into fine grained and fall from nozzle for cooling tower 2, and steam evaporates from cooling tower top, and the desulfurization wastewater of concentration enters pond of cooling tower 3;
Constantly heating by above-mentioned flow process and evaporate, 5 to 80 times that flow is desulfurization wastewater yield of cooling tower circulating pump 5 dozens circulation, 1/5th or direct crystallization that last desulfurization wastewater can concentrate as original volume go out salt.
Wherein, desulfurization wastewater uses flue gas in plastic heat exchanger 6.
Wherein, desulfurization wastewater is heated to 50-90 DEG C in flue.
The yield assuming a certain power plant desulfurization waste water is 15 tphs, then the flow that the desulfurization wastewater in pond of cooling tower 3 is circulated by cooling tower circulating pump 5 dozens is 75 to 1200 tphs, and the amount about 3 tons or the direct crystallization that are concentrated into last desulfurization wastewater go out salt.
As Figure 1Shown in, a kind of desulfurization wastewater cooling tower evaporation technology uses device, and including cooling tower 1 and desulfurizing tower 8, desulfurizing tower 8 connects desulfurizing tower front portion flue 7, is provided with plastic heat exchanger 6 in desulfurizing tower front portion flue 7;
Pond of cooling tower 3 is installed bottom cooling tower 1, pond of cooling tower 3 connects desulfurization wastewater filling pipe 4, it is connected by inlet channel between pond of cooling tower 3 with plastic heat exchanger 6, cooling tower circulating pump 5 is installed on inlet channel, plastic heat exchanger 6 is connected to cooling tower 1 upper end by outlet conduit, and outlet conduit is positioned on the pipeline within cooling tower 1 and is provided with nozzle for cooling tower 2.
During use, desulfurization wastewater is entered pond of cooling tower 3 by desulfurization wastewater filling pipe 4, then plastic heat exchanger 6 is pumped into by cooling tower circulating pump 5, by flue gas, the desulfurization wastewater in plastic heat exchanger 6 is heated, cooling tower 1 is entered by outlet conduit after being heated to 50-90 DEG C, spraying into fine grained from cooling tower 1 nozzle subsequently to fall, steam evaporates from cooling tower 1 top, and the desulfurization wastewater of concentration enters pond of cooling tower 3.
With above-mentioned according to thisInventionDesirable embodiment for enlightenment, by above-mentioned description, relevant staff completely can be without departing from thisInventionIn the range of technological thought, carry out various change and amendment.ThisInventionThe content that is not limited in description of technical scope, it is necessary toAccording to claimScope determines its technical scope.

Claims (4)

1. a desulfurization wastewater cooling tower evaporation technology, it is characterised in that described technique comprises the following steps:
S1, by desulfurization wastewater collect to pond of cooling tower;
S2, cooling tower circulating pump are by the plastic heat exchanger in the desulfurization wastewater pump in pond of cooling tower to desulfurizing tower front portion flue;
S3, desulfurization wastewater are heated to uniform temperature in plastic heat exchanger, then proceed to cooling tower, spray into fine grained and fall from nozzle for cooling tower, and steam evaporates from cooling tower top, and the desulfurization wastewater of concentration enters pond of cooling tower;
Constantly heating by above-mentioned flow process and evaporate, 5 to 80 times that the flow of circulation is desulfurization wastewater yield beaten by cooling tower circulating pump, and 1/5th or direct crystallization that last desulfurization wastewater can concentrate as original volume go out salt.
A kind of desulfurization wastewater cooling tower evaporation technology the most according to claim 1, it is characterised in that: described desulfurization wastewater uses flue gas in plastic heat exchanger.
A kind of desulfurization wastewater cooling tower evaporation technology the most according to claim 1, it is characterised in that: described desulfurization wastewater is heated to 50-90 DEG C in flue.
4. a kind of desulfurization wastewater cooling tower evaporation technology as claimed in claim 1 uses device, it is characterised in that: including cooling tower and desulfurizing tower, described desulfurizing tower connects desulfurizing tower front portion flue, is provided with plastic heat exchanger in the flue of described desulfurizing tower front portion;
Bottom described cooling tower, pond of cooling tower is installed, described pond of cooling tower connects desulfurization wastewater filling pipe, it is connected by inlet channel between described pond of cooling tower and plastic heat exchanger, cooling tower circulating pump is installed on described inlet channel, described plastic heat exchanger is connected to cooling tower upper end by outlet conduit, and described outlet conduit is positioned on the pipeline within cooling tower and is provided with nozzle for cooling tower.
CN201610339614.1A 2016-05-23 2016-05-23 Evaporation process and device of desulfurized wastewater cooling tower Pending CN105967253A (en)

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CN105967253A true CN105967253A (en) 2016-09-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106396231A (en) * 2016-10-28 2017-02-15 浙江蓝天求是环保股份有限公司 Treatment system and treatment method for evaporating and crystallizing desulfurization waste water by using cooling tower
CN107619077A (en) * 2016-07-15 2018-01-23 钟方明 A kind of steam heating desulfurization wastewater spray cooling tower evaporation technology and device
CN108117210A (en) * 2016-11-29 2018-06-05 中国石油化工股份有限公司 The processing method and processing unit of a kind of flue gas desulphurization waste solution
CN109331635A (en) * 2018-11-01 2019-02-15 上海伏波环保设备有限公司 The wet desulfurization system of included desulfurization wastewater enrichment facility
CN110104717A (en) * 2019-06-13 2019-08-09 华能安源发电有限责任公司 Utilize the method and system of bypass smoke evaporative desulfurization wastewater and stable loop slurry

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107619077A (en) * 2016-07-15 2018-01-23 钟方明 A kind of steam heating desulfurization wastewater spray cooling tower evaporation technology and device
CN106396231A (en) * 2016-10-28 2017-02-15 浙江蓝天求是环保股份有限公司 Treatment system and treatment method for evaporating and crystallizing desulfurization waste water by using cooling tower
CN106396231B (en) * 2016-10-28 2019-08-02 浙江蓝天求是环保股份有限公司 It is a kind of to utilize cooling tower evaporative crystallization desulfurization wastewater treatment system and processing method
CN108117210A (en) * 2016-11-29 2018-06-05 中国石油化工股份有限公司 The processing method and processing unit of a kind of flue gas desulphurization waste solution
CN109331635A (en) * 2018-11-01 2019-02-15 上海伏波环保设备有限公司 The wet desulfurization system of included desulfurization wastewater enrichment facility
CN110104717A (en) * 2019-06-13 2019-08-09 华能安源发电有限责任公司 Utilize the method and system of bypass smoke evaporative desulfurization wastewater and stable loop slurry
CN110104717B (en) * 2019-06-13 2021-09-14 华能安源发电有限责任公司 Method and system for evaporating desulfurization wastewater and stabilizing circulating slurry by using bypass flue gas

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Application publication date: 20160928