CN208916852U - The Zero emission device that concentration is evaporated waste water is evaporated using boiler smoke waste heat - Google Patents

The Zero emission device that concentration is evaporated waste water is evaporated using boiler smoke waste heat Download PDF

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Publication number
CN208916852U
CN208916852U CN201821276731.9U CN201821276731U CN208916852U CN 208916852 U CN208916852 U CN 208916852U CN 201821276731 U CN201821276731 U CN 201821276731U CN 208916852 U CN208916852 U CN 208916852U
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China
Prior art keywords
waste water
outlet
entrance
evaporated
drying tower
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CN201821276731.9U
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张全根
赵勇纲
穆冬梅
袁渭军
赵瑞云
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XI'AN XIELI POWER TECHNOLOGY Co Ltd
Technology Research Institute of Shenhua Shendong Power Co Ltd
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XI'AN XIELI POWER TECHNOLOGY Co Ltd
Technology Research Institute of Shenhua Shendong Power Co Ltd
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Abstract

The Zero emission device that concentration is evaporated waste water is evaporated using boiler smoke waste heat, part is evaporated including being concentrated by evaporation part and concentrated water, part is concentrated by evaporation to draw a part of 90~160 DEG C of low-temperature flue gas from electric precipitator rear pass, enter after the first bypass blower pressurization and is concentrated by evaporation tower, waste water is forced into through waste water circulating pump and is concentrated by evaporation tower top spray, concentrated water is evaporated part to draw a part of 100~170 DEG C of low-temperature flue gas from air preheater rear pass, drying tower is led to after bypass blower pressurization, concentrated waste water leads to drying tower top through concentrated water pump pressurization and is sprayed, drying tower is connected with electric precipitator, buffering ash can is set below drying tower;Flue draws a part of 300~360 DEG C of high-temperature flue gas from before air preheater simultaneously, auxiliary is evaporated drying in the insufficient situation of low-temperature flue gas thermic load, the utility model has the advantages that low energy consumption, investment is low, operating cost is low, can promote the use of wastewater zero discharge field.

Description

The Zero emission device that concentration is evaporated waste water is evaporated using boiler smoke waste heat
Technical field
The utility model belongs to industrial waste water disposal device or equipment technical field, and in particular to utilizes boiler smoke to a kind of Gas waste heat is evaporated the Zero emission device that concentration is evaporated waste water.
Background technique
Current so-called zero-emission is the near-zero release of waste water, is difficult to realize real zero-emission.Softened using lime Or after the processing of the chemical precipitation methods such as sodium carbonate is up to standard, still containing the soluble solid of high concentration in waste water, it is difficult to recycle.
If brine waste directly to be sprayed to coal yard secondary pollution easy to form, and equipment can be corroded;Using UF membrane Technology, such as the disadvantages of reverse osmosis, positive infiltration, nanofiltration exist that investment is high, energy consumption is high, operating cost is high, film easy blocking pollution, most Whole strong brine also needs the processing such as crystallization.
Although being directly evaporated technology simple process using high-temperature flue gas, equipment is reliable for operation, invests lower, energy consumption Height, boiler efficiency decline.
In conclusion the prior art also needs inherently to improve, invent it is a kind of energy-efficient, securely and reliably, invest it is low, The low waste water zero-discharge technology of operating cost.
Summary of the invention
The technical problem to be solved by the utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of design conjunction is provided Reason, structure are simple, low energy consumption, investment is low, operating cost is low is evaporated concentration using boiler smoke waste heat and is evaporated waste water Zero emission device.
Solve above-mentioned technical problem the technical solution adopted is that: the outlet of boiler passes through the entrance of pipeline and air preheater It is connected and the lower inlet of drying tower is connected, the outlet of air preheater is connected by flue with the entrance of electric precipitator Logical, setting outlet is connected with the entrance of the first bypass blower on the flue between air preheater and electric precipitator, by the of first The outlet of transportation work style machine is connected with the lower inlet of drying tower, and the upper outlet of drying tower is connected by pipeline with the entrance of electric precipitator Logical, the lower outlet of drying tower is connected with the entrance of buffering ash can, and the outlet of electric precipitator is connected with the entrance of air-introduced machine, draws The outlet of blower is connected by flue with the entrance of desulfurizing tower, and the outlet of desulfurizing tower is connected with chimney, air-introduced machine and desulfurization Setting outlet is connected with the entrance of the second bypass air-introduced machine on flue between tower, the outlet and evaporation of the second bypass air-introduced machine The lower inlet of inspissator is connected, and the upper outlet of evaporation concentrator is connected with the entrance of desulfurizing tower, lower outlet and waste water tank One entrance is connected, and waste water is entered by another entrance of waste water tank, and an outlet of waste water tank is dense by waste water circulating pump and evaporation The upper inlet of contracting device is connected, another outlet is pumped by concentrated water and is connected with the upper inlet of drying tower.
The evaporation concentrator of the utility model are as follows: middle part is provided with filler in concentrator tank body, internal upper part is provided with spray The entrance of device, spray thrower is connected by the waste water circulating pump being mounted on pipeline with waste water tank, inspissator tank body lower part and useless Water tank is connected.
The drying tower of the utility model are as follows: drying tower tank body internal upper part is provided with sprayer, and sprayer entrance passes through installation Concentrated water pump on pipeline is connected with waste water tank, and drying tower tank body lower part is provided with buffering ash can.
The utility model has the advantage that compared with the prior art
The utility model carries out heating evaporation concentration to industrial wastewater using boiler of power plant fume waste heat and is evaporated waste water, in tower Interior waste water water mist and flue gas come into full contact with heat exchange, are all evaporated, and ash content returns to flue collector with flue gas and removes through electric precipitator, separate Solid out is discharged to buffering ash can, periodically pumps out the ash content fallen into buffering ash can 14.Solves the highly concentrated Industry Waste of thermal power plant Water process reduces environmental pollution, reduces the highly concentrated Industrial Wastewater Treatment expense of power plant.The utility model have design rationally, The advantages that low energy consumption, remarkable in economical benefits, can promote the use of in thermal power plant.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Fig. 2 is the structural schematic diagram of evaporation concentrator 9 in Fig. 1.
Fig. 3 is the structural schematic diagram of drying tower 13 in Fig. 1.
In figure: 1, boiler;2, air preheater;3, the first bypass blower;4, electric precipitator;5, air-introduced machine;6, by the of second Transportation work style machine;7, desulfurizing tower;8, chimney;9, evaporation concentrator;10, waste water tank;11, concentrated water pumps;12, waste water circulating pump;13, dry Tower;14, ash can is buffered;9-1, inspissator tank body;9-2, filler;9-3, spray thrower;13-1, drying tower tank body;13-2, it is sprayed Device.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and examples, but the utility model is not limited to this A little embodiments.
Embodiment 1
In Fig. 1, the utility model is evaporated the Zero emission device that concentration is evaporated waste water, pot using boiler smoke waste heat The outlet of furnace 1 is connected by pipeline with the entrance of air preheater 2 and the lower inlet of drying tower 13 is connected, air preheat The outlet of device 2 is connected by flue with the entrance of electric precipitator 4, is set on the flue between air preheater 2 and electric precipitator 4 It sets outlet to be connected with the entrance of the first bypass blower 3, draws 100~170 DEG C of low-temperature flue gas, pressurize through the first bypass blower 3 After lead to drying tower 13, the outlet of the first bypass blower 3 is connected with the lower inlet of drying tower 13, and the upper outlet of drying tower 13 leads to Piping is connected with the entrance of electric precipitator 4, and the lower outlet of drying tower 13 is connected with the entrance of buffering ash can 14, in Fig. 3 In, drying tower 13 described in the present embodiment is by drying tower tank body 13-1, sprayer 13-2, concentrated water pump 11, waste water tank 10, buffering ash Tank 14 connects and composes, and drying tower tank body 13-1 internal upper part is equipped with sprayer 13-2, and sprayer 13-2 entrance is by being mounted on pipe Concentrated water pump 11 on road is connected with waste water tank 10, and the lower part drying tower tank body 13-1 is provided with buffering ash can 14, concentrated Waste water is forced into 13 middle and upper part of drying tower through concentrated water pump 11 and is evaporated by spraying, and waste water water mist comes into full contact with flue gas in drying tower 13 Heat exchange, is all evaporated, and ash content returns to flue collector with flue gas and removes by electric precipitator 4, and buffering ash can 14 is collected and periodically pumped out Fall into the ash content of 13 lower part of drying tower;A part of 300~350 DEG C of high-temperature flue gas are drawn from flue before air preheater 2 simultaneously, Auxiliary is evaporated drying in the insufficient situation of low-temperature flue gas thermic load.
The outlet of electric precipitator 4 is connected with the entrance of air-introduced machine 5, and the outlet of air-introduced machine 5 passes through flue and desulfurizing tower 7 Entrance is connected, and the outlet of desulfurizing tower 7 is connected with chimney 8, on the flue between air-introduced machine 5 and desulfurizing tower 7 setting outlet with The entrance of second bypass air-introduced machine 6 is connected, and the outlet of the second bypass air-introduced machine 6 is connected with the lower inlet of evaporation concentrator 9, The upper outlet of evaporation concentrator 9 is connected with the entrance of desulfurizing tower 7, lower outlet is connected with an entrance of waste water tank 10, waste water Entered by another entrance of waste water tank 10, an outlet of waste water tank 10 on waste water circulating pump 12 and evaporation concentrator 9 by entering Mouth is connected, another outlet is connected by concentrated water pump 11 with the upper inlet of drying tower 13, in Fig. 2, described in the present embodiment Evaporation concentrator 9 is connected and composed by inspissator tank body 9-1, filler 9-2, spray thrower 9-3, waste water tank 10, waste water circulating pump 12, dense Middle part is provided with filler in contracting device tank body 9-1, internal upper part is equipped with spray thrower 9-3, and the entrance of spray thrower 9-3 is by being mounted on pipe Waste water circulating pump 12 on road is connected with waste water tank 10, and the inspissator lower part tank body 9-1 is connected with waste water tank 10, and waste water is through useless Water-circulating pump 12, which is forced into, is concentrated by evaporation 9 middle and upper part spray of tower, and waste water is sprayed onto filler 9-2 by spray thrower 9-3 to be steamed Hair concentration heat exchange, the flue gas for flowing through the surface filler 9-2 are quickly cooled down heat dissipation, and flue gas reaches moisture saturation, and smoke temperature drops to 50 ~60 DEG C, the flue gas after cooling down returns to desulfurizing tower 7 through bypass flue, and unevaporated waste water flows into waste water tank 10, continues to follow Ring is concentrated by evaporation.

Claims (3)

1. a kind of be evaporated the Zero emission device that concentration is evaporated waste water using boiler smoke waste heat, it is characterised in that: boiler Outlet is connected by pipeline with the entrance of air preheater and the lower inlet of drying tower is connected, the outlet of air preheater It is connected by flue with the entrance of electric precipitator, setting outlet and first on the flue between air preheater and electric precipitator The entrance of bypass blower is connected, and the outlet of the first bypass blower is connected with the lower inlet of drying tower, the upper outlet of drying tower It is connected by pipeline with the entrance of electric precipitator, the lower outlet of drying tower is connected with the entrance of buffering ash can, electric precipitator Outlet be connected with the entrance of air-introduced machine, the outlet of air-introduced machine is connected by flue with the entrance of desulfurizing tower, desulfurizing tower Outlet is connected with chimney, and setting outlet is connected with the entrance of the second bypass air-introduced machine on the flue between air-introduced machine and desulfurizing tower Logical, the outlet of the second bypass air-introduced machine is connected with the lower inlet of evaporation concentrator, the upper outlet and desulfurizing tower of evaporation concentrator Entrance be connected, it is lower outlet be connected with an entrance of waste water tank, waste water by waste water tank another entrance entrance, waste water tank One outlet is connected by waste water circulating pump with the upper inlet of evaporation concentrator, another outlet pumped by concentrated water it is upper with drying tower Entrance is connected.
2. according to claim 1 be evaporated the Zero emission device that concentration is evaporated waste water using boiler smoke waste heat, It is characterized in that the evaporation concentrator are as follows: middle part is provided with filler in concentrator tank body, internal upper part is provided with spray thrower, spray The entrance of device is connected by the waste water circulating pump being mounted on pipeline with waste water tank, and inspissator tank body lower part is connected with waste water tank It is logical.
3. according to claim 1 be evaporated the Zero emission device that concentration is evaporated waste water using boiler smoke waste heat, It is characterized in that the drying tower are as follows: drying tower tank body internal upper part is provided with sprayer, and sprayer entrance is by being mounted on pipeline On concentrated water pump be connected with waste water tank, drying tower tank body lower part is provided with buffering ash can.
CN201821276731.9U 2018-08-09 2018-08-09 The Zero emission device that concentration is evaporated waste water is evaporated using boiler smoke waste heat Active CN208916852U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020108135A1 (en) * 2018-11-29 2020-06-04 国家电投集团远达环保工程有限公司重庆科技分公司 Desulfurization wastewater treatment system and desulfurization wastewater treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020108135A1 (en) * 2018-11-29 2020-06-04 国家电投集团远达环保工程有限公司重庆科技分公司 Desulfurization wastewater treatment system and desulfurization wastewater treatment method

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