CN204588906U - Mercury-containing waste water desalination special processor - Google Patents
Mercury-containing waste water desalination special processor Download PDFInfo
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- CN204588906U CN204588906U CN201520250023.8U CN201520250023U CN204588906U CN 204588906 U CN204588906 U CN 204588906U CN 201520250023 U CN201520250023 U CN 201520250023U CN 204588906 U CN204588906 U CN 204588906U
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Abstract
The utility model mercury-containing waste water desalination special processor, comprises surge tank, exhaust steam preheater, water of condensation preheater, an effect falling-film evaporator, two effect pump feed evaporators, thickener, whizzer, mother liquor tank, mother liquor pump, indirect condenser, vacuum pump, active carbon adsorber, condensate water pot composition.The utility model can realize less energy-consumption, and the production object of zero release, realizes serialization and automatic production simultaneously.
Description
Technical field
The utility model belongs to chemical field and field of Environment Protection, particularly relates to the mercury-containing waste water desalination special processor of non-ferrous metal metallurgy, chemical industry, agricultural chemicals, papermaking, dye industry.
Background technology
According to statistics, have the industry of kind more than 80 to be raw material with mercury in the world, the purposes of mercury reaches kind more than 3000, uses so widely, and the mercury scattered and disappeared in environment in the annual whole world is about 1.5-3.0 × 10
4t.In the approach of " waste gas, waste water, waste residue " three kinds of environmental pollutions, mercurous three wastes harm is maximum.Mercury-containing waste water is mainly derived from non-ferrous metals smelting works, chemical plant, insecticide factory, paper mill, dye processing plant and thermal technology instrument instrucment and meter plant etc.In mercury-containing waste water, not only the harm of mercury is very large, and the high content of salt in waste water causes larger harm to environment equally.Mercury-containing waste water is carried out to the process of desalination, the removal of mercury, not only can alleviate its pollution to environment, can reclaim salinity simultaneously, realize the recycling of resource, kill two birds with one stone.
The processing mode of Mercury in Wastewater is many, such as: chemical precipitation method, metal deoxidization, active carbon adsorption, ion exchange method etc., mercury-containing waste water is after the pre-treatment of aforesaid method, can remove the most of mercury in waste water, the remaining mercury in waste water and salt component need be carried out reprocessing and be reclaimed salt.What the method for desalination was conventional has membrane separation process (electrodialysis), ion exchange method and distillation method etc., but it is little to there is treatment capacity in membrane separation process (electrodialysis), power consumption is high, the shortcoming that desalting efficiency is low, and the waste water higher to saltiness, often do not reach requirement or uneconomical according to ion exchange method process.
Utility model content
The purpose of this utility model will provide a kind of mercury-containing waste water desalination special processor exactly, and to realize less energy-consumption, the production object of zero release, realizes serialization and automatic production simultaneously.
The utility model is achieved in that
Mercury-containing waste water desalination special processor comprises:
Surge tank, for storing the filtrate of mercury-containing waste water after the chemical precipitation method removal of mercury;
Exhaust steam preheater, utilizes exhaust steam to carry out preheating to it for the feed liquid that receives from described surge tank;
Water of condensation preheater, for receiving the feed liquid after from described exhaust steam preheater preheats and utilizing condensation water residual heat again to heat it;
One effect falling-film evaporator, concentrates for the feed liquid from described water of condensation preheater is carried out heating evaporation;
Two effect pump feed evaporators, for the feed liquid heating evaporation crystallization by imitating falling-film evaporator from described;
Thickener, for storing enrichment by the crystallization feed liquid from described two effect forced circulation evaporations;
Whizzer, for carrying out solid-liquid separation by the solidliquid mixture from described thickener;
Mother liquor tank, for storing the solvent portions obtained after described whizzer is separated;
Mother liquor pump, for returning the solution conveying in described mother liquor tank to 2nd effect evaporator;
Indirect condenser, reclaims the secondary steam condensation that described two effect pump feed evaporators produce;
Vacuum pump, for the not condensing component in the secondary steam by described indirect condenser extraction system evaporation;
Active carbon adsorber, is installed on described vacuum pump outlet, for adsorbing the Trace Mercury that non-condensable gas in evaporating concentration process carries; And
Condensate water pot, for collecting the mercurous water of condensation of the condensation in described two effect pump feed evaporators and indirect condenser, is recycled by pump extraction.
As improvement opportunity scheme, the utility model is provided with two effect propeller pump, for improving the speed of circulation of feed liquid in 2nd effect evaporator between the two effect heating chambers and two effect separate chambers of described two effect pump feed evaporators.
The utility model arranges charcoal filter at vacuum pump outlet, can active adsorption vacuum pump extract intrasystem not condensing component contain trace mercury.The adsorptive power of gac heavy metal ion is very strong; And can activate by desorption and regeneration, long service life, advantages of good adsorption effect, absorption can be continued and without the need to any energy and raw material, run price low, high efficient and reliable.The utility model selects economic benefits and social benefits following current to evaporate flow process, can realize low temperature discharging, reduces high temperature feed liquid to the high temperature impact infection of device.
Waste water desalting plant designed by the utility model, Waste water concentrating completes in an effect falling-film evaporator, does not have crystal to separate out, thus can adopt that heat transfer coefficient is high, temperature difference loss is little, energy consumption is low, falling-film evaporator that feed liquid heat-up time is short in evaporative process.Salinity crystallisation process completes in two effect pump feed evaporators, owing to having crystal to separate out in a large number in two effect evaporative processes, therefore adopts resistance to salting-out, pump feed evaporator that resistive connection scar plugging ability is strong.The utility model also utilizes exhaust steam (secondary steam), an effect water of condensation carries out two-stage preheating to stock liquid.Not only increase the temperature of the waste water entering vaporizer, reduce the consumption of raw steam to a certain extent, also waste heat is recycled.In the utility model, raw steam and waste water carry out heat exchange at shell, tube side respectively, do not circulate mutually, non-cross pollution, and therefore clean raw steam condensate can return boiler systems and recycle.The utility model concentrated solution is through solid-liquid separation, and the salinity in solid part and waste water can reclaim, and solvent portions returns vapo(u)rization system, without outer pollution discharging.In condensate water pot centralized collection after secondary steam condensation in device, centralized collection not only reduces the water discharge point in device, decreases pollution probability, and can be recycled outward to device by pump delivery.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Shown in Fig. 1, mercury-containing waste water desalination special processor, comprises surge tank 2, exhaust steam preheater 10, water of condensation preheater 3, imitates falling-film evaporator, two effect pump feed evaporator, thickener 18, whizzer 19, mother liquor tank 20, mother liquor pump 17, indirect condenser 12, vacuum pump 14, active carbon adsorber 13 and condensate water pots 15 form.
Wherein, the filtrate of mercury-containing waste water after the chemical precipitation method removal of mercury stored by surge tank 2.Filtrate in surge tank 2 is through feeding pump 1 pump to exhaust steam preheater 10, and exhaust steam preheater 10 utilizes exhaust steam to carry out preheating to feed liquid.Feed liquid after exhaust steam preheater preheats enters water of condensation preheater 3, and water of condensation preheater 3 utilizes condensation water residual heat again to heat it.Feed liquid after water of condensation preheater 3 heats enters an effect falling-film evaporator.One effect falling-film evaporator comprises an effect heating chamber 4 and an effect separate chamber 5 to carry out heating evaporation and concentrates.Feed liquid from an effect falling-film evaporator enters two effect pump feed evaporators through discharging pump 6 and carries out heating evaporation crystallization.Two effect propeller pump 9 are installed, for improving the speed of circulation of feed liquid in 2nd effect evaporator between two effect heating chambers 7 of two effect pump feed evaporators and two effect separate chambers 8.The discharging of two effect pump feed evaporators pumps into thickener 18 through discharging pump 11.Thickener 18 is by the crystallization feed liquid storage enrichment from two effect forced circulation evaporations.Solidliquid mixture through thickener 18 enrichment enters whizzer 19 and carries out solid-liquid separation.Be separated the solvent portions obtained and be stored in mother liquor tank 20, the solution conveying in mother liquor tank 20 is returned two effect pump feed evaporators by mother liquor pump 17.The secondary steam condensation that two effects produce is reclaimed by indirect condenser 12, realizes UTILIZATION OF VESIDUAL HEAT IN.Vacuum pump 14 is for the not condensing component in the secondary steam that evaporated by indirect condenser extraction system.Active carbon adsorber 13 is installed on vacuum pump outlet, for adsorbing the Trace Mercury that non-condensable gas in evaporating concentration process carries.Condensate water pot 15, for collecting the mercurous water of condensation of the condensation in two effect pump feed evaporators and indirect condenser, is recycled by condensate pump 16 extraction.
The utility model is stage of not having crystal to separate out phase before the evaporation, employing heat transfer coefficient is high, temperature difference loss is little, the falling-film evaporator that less energy-consumption, residence time of material are short, the evaporation later stage adopts the pump feed evaporator being applicable to the brilliant material of process band, two kinds of form vaporizers with the use of, ensure output basis on, effectively can shorten the treatment time of material, raise the efficiency, operational process is reliable and stable.In the utility model, negative-pressure operation, decrease the leak point in evaporating concentration process, mercury in waste water is after chemical precipitation method removing, mercury still containing trace in solution, can exist in salt, water of condensation and non-condensable gas after centrifugation, and salt and water of condensation are all unified collections or recycling, non-condensable gas is discharged by vacuum pump, and vacuum pump outlet arranges charcoal filter and adsorbs remaining mercury.
Flow direction of material in the utility model use procedure: after pretreated mercury-containing waste water enters surge tank 2, successively exhaust steam preheater 10 is delivered to by feeding pump 1, after water of condensation preheater 3 preheating, enter an effect falling film evaporator heating chamber 4 and an effect heating chamber 5 carries out evaporation concentration, material after concentrated is delivered to after two effect pump feed evaporators carry out evaporative crystallization by an effect discharging pump 6 and enters thickener 18 through discharging pump 11, enter whizzer 19 again and carry out solid-liquid centrifugation separation, mother liquor after separation enters mother liquor tank 20, return in 2nd effect evaporator by mother liquor pump 17 again, the solid part that centrifugation obtains is product salt.
The feed liquid that steam and condensation flow enter in the shell side of 1st effective evaporator heating chamber 4 and tube side to: raw steam carries out heat exchange condensation, and phlegma enters water of condensation preheater 3 and utilizes waste heat to carry out preheating material.The secondary steam that one effect separate chamber 5 produces enters the shell side of 2nd effect evaporator heating chamber 7 as heating steam, enter condensate water pot 15 and recycle after condensation.Two effects are separated the secondary steam produced and are introduced into exhaust steam preheater 10 preheating material, and the secondary steam of condensation enters condensate water pot 15, and uncooled secondary steam enters indirect condenser 12 again, is recycled after condensation by condensate water pot 15.Indirect condenser 12 is furnished with vacuum pump 14 provides low pressure, vacuum environment for it, and vacuum pump 14 venting port arranges active carbon adsorber 13, adsorbs mercurous non-condensable gas.
Compared with prior art, this device is utilized substantially can to realize " zero " discharge of industrial mercury-containing waste water.In addition, use the utility model not by saliferous quantitative limitation in water, plant capacity is large, and consuming cost is low, extracts salt efficiency high.
Claims (2)
1. a mercury-containing waste water desalination special processor, is characterized in that, comprising:
Surge tank, for storing the filtrate of mercury-containing waste water after the chemical precipitation method removal of mercury;
Exhaust steam preheater, utilizes exhaust steam to carry out preheating to it for the feed liquid that receives from described surge tank;
Water of condensation preheater, for receiving the feed liquid after from described exhaust steam preheater preheats and utilizing condensation water residual heat again to heat it;
One effect falling-film evaporator, concentrates for the feed liquid from described water of condensation preheater is carried out heating evaporation;
Two effect pump feed evaporators, for the feed liquid heating evaporation crystallization by imitating falling-film evaporator from described;
Thickener, for storing enrichment by the crystallization feed liquid from described two effect forced circulation evaporations;
Whizzer, for carrying out solid-liquid separation by the solidliquid mixture from described thickener;
Mother liquor tank, for storing the solvent portions obtained after described whizzer is separated;
Mother liquor pump, for returning the solution conveying in described mother liquor tank to 2nd effect evaporator;
Indirect condenser, reclaims the secondary steam condensation that described two effect pump feed evaporators produce;
Vacuum pump, for the not condensing component in the secondary steam by described indirect condenser extraction system evaporation;
Active carbon adsorber, is installed on described vacuum pump outlet, for adsorbing the Trace Mercury that non-condensable gas in evaporating concentration process carries; And
Condensate water pot, for collecting the mercurous water of condensation of the condensation in described two effect pump feed evaporators and indirect condenser, is recycled by pump extraction.
2. mercury-containing waste water desalination special processor according to claim 1, it is characterized in that, between the two effect heating chambers and two effect separate chambers of described two effect pump feed evaporators, two effect propeller pump are installed, for improving the speed of circulation of feed liquid in 2nd effect evaporator.
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| CN201520250023.8U CN204588906U (en) | 2015-04-23 | 2015-04-23 | Mercury-containing waste water desalination special processor |
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| CN201520250023.8U CN204588906U (en) | 2015-04-23 | 2015-04-23 | Mercury-containing waste water desalination special processor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836951A (en) * | 2016-05-23 | 2016-08-10 | 江苏瑞升华能源科技有限公司 | Treatment process and device of electroplating wastewater |
| CN106395949A (en) * | 2016-11-30 | 2017-02-15 | 江苏迈安德节能蒸发设备有限公司 | Treatment system of sodium sulfate wastewater |
| CN109761422A (en) * | 2018-12-19 | 2019-05-17 | 中科京投环境科技江苏有限公司 | It is a kind of for handling the industrial wastewater treatment device of mercury metal |
| CN113023993A (en) * | 2021-03-18 | 2021-06-25 | 河南绿水青山环保科技有限公司 | Chemical wastewater zero-discharge treatment system |
-
2015
- 2015-04-23 CN CN201520250023.8U patent/CN204588906U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836951A (en) * | 2016-05-23 | 2016-08-10 | 江苏瑞升华能源科技有限公司 | Treatment process and device of electroplating wastewater |
| CN105836951B (en) * | 2016-05-23 | 2019-03-19 | 江苏瑞升华能源科技有限公司 | A kind of electroplating waste processing process and device |
| CN106395949A (en) * | 2016-11-30 | 2017-02-15 | 江苏迈安德节能蒸发设备有限公司 | Treatment system of sodium sulfate wastewater |
| CN106395949B (en) * | 2016-11-30 | 2023-02-21 | 江苏迈安德节能蒸发设备有限公司 | Sodium sulfate wastewater treatment system |
| CN109761422A (en) * | 2018-12-19 | 2019-05-17 | 中科京投环境科技江苏有限公司 | It is a kind of for handling the industrial wastewater treatment device of mercury metal |
| CN113023993A (en) * | 2021-03-18 | 2021-06-25 | 河南绿水青山环保科技有限公司 | Chemical wastewater zero-discharge treatment system |
| CN113023993B (en) * | 2021-03-18 | 2023-08-22 | 河南绿水青山环保科技有限公司 | Treatment system for zero discharge of chemical wastewater |
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Address after: 050000 10-1201, Fangda Science Park, 266 Tianshan Street, high tech Zone, Shijiazhuang City, Hebei Province Patentee after: Shijiazhuang Dingwei Chemical Equipment Engineering Co.,Ltd. Address before: 050000 10-1201, 266 Tianshan Street, high tech Zone, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG DINGWEI CHEMICAL EQUIPMENT ENGINEERING Co.,Ltd. |