CN209396925U - A kind of evaporated crystallization device based on steam pressure energy - Google Patents
A kind of evaporated crystallization device based on steam pressure energy Download PDFInfo
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- CN209396925U CN209396925U CN201821829548.7U CN201821829548U CN209396925U CN 209396925 U CN209396925 U CN 209396925U CN 201821829548 U CN201821829548 U CN 201821829548U CN 209396925 U CN209396925 U CN 209396925U
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Abstract
The utility model relates to a kind of evaporated crystallization devices based on steam pressure energy, including preheater, heater, separator, crystallizer, forced circulation pump, gypsum dehydration machine, second steam generator, steam accumulator, thickener and centrifuge etc., the utility model is able to achieve the evaporative crystallization to high-salt wastewater by the pressure of steam pressure conversion process, to realize that the high efficiente callback of steam pressure energy utilizes, and stablize the steam of output constant pressure by steam accumulator, to which the operation energy consumption of evaporative crystallization be greatly lowered, in addition, the present apparatus may be implemented to divide salt to purify the high-salt wastewater based on sodium sulphate and sodium chloride system, by introducing crystal seed preventing fouling etc., realize that evaporative crystallization generates technical grade purity sodium chloride, by-product gypsum simultaneously, realize crystal salt abraum salt recycling, and reach technical grade purity standard.
Description
Technical field
The utility model relates to be able to achieve pair by becoming the pressure in low pressure event from high pressure using steam pressure
Brine waste is evaporated crystallization and exports the complexes of stabilizing low voltage steam, belongs to energy conservation and environmental protection.
Background technique
70% or more of China's non-renewable energy is consumed by national hundreds of thousands platform boiler, and among these, about 60% is steam
Boiler, consumes nearly 500,000,000 tons of marks coal year, accounting consumed close to entire national energy 20%, steam is transmitted as the main energy
Medium, using extremely wide in the life of China's national product, in different industrial productions, people's lives for the pressure of steam,
The demand of temperature is different, and therefore, steam is rear out from boiler, is depressurized, the pressure and temperature reducing of general middle Low Temperature Steam
Process majority is completed by reducing-and-cooling plant, and reducing-and-cooling plant is by hot-wire instrument, safety guard, Desuperheating device, decompression
The composition such as valve complete set of equipments.Primary steam becomes the acting of secondary steam, steam in this process by decompression temperature reducing system
Ability about loses 10% or more, these energy losses are seldom effectively recycled and utilized at present in China, energy waste pole
Greatly, be used if this part energy sufficiently recycled, this for it is whole improve China's energy it is efficient utilize, it is energy saving
Resource has particularly important meaning.
A large amount of high-salt wastewaters are generated in China's industrial production, industry high-salt wastewater main salt component in China's is sodium sulphate and chlorine
Change sodium system, high-salt wastewater processing mode mainly passes through evaporative crystallization at present, abraum salt is separated from the water, evaporative crystallization is general
Using multiple-effect evaporation or MVR crystallizing evaporator, multi-effect evaporator one ton of water consumption quantity of steam of evaporation is big, is with triple effect evaporation crystallization
Example, one ton of water of evaporative crystallization need general 60 yuan or more expenses, and operating cost is expensive, cause very big economic pressures to enterprise, and
MVR evaporated crystallization device evaporates one ton of high-salt wastewater, and at least 45 degree electricity of the power consumption needed are overall to need general more than 30 yuan of tons
Water process expense, although processing cost reduces much than multiple-effect evaporation processing cost, energy consumption still allows enterprise difficult
To bear, it is low how to find a kind of ton of cost of water treatment, invests reasonable evaporated crystallization device, reduce evaporative crystallization operation at
This, is the serious problem that current China faces.
Utility model content
In view of the above technical problems, the utility model provides a kind of evaporated crystallization device based on steam pressure energy.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of evaporative crystallization based on steam pressure energy
Device, including preheater, heater, separator, crystallizer, forced circulation pump, gypsum dehydration machine, second steam generator, steaming
Vapour storage heater, thickener and centrifuge；
The preheater be equipped with for be passed through brackish water first charging aperture, second for being passed through secondary steam condensed water
Feed inlet and discharge port for exporting brackish water, the heater are equipped with the first charging aperture and second for being passed through brackish water
Feed inlet, the third feed inlet for being passed through primary steam and the discharge port for exporting brackish water, the separator, which is equipped with, to be used
In the feed inlet, the first discharge port and the second discharge port for exporting brackish water that are passed through brackish water, the gypsum dehydration machine is set
There are the feed inlet for being passed through brackish water, the first discharge port for exporting gypsum and for exporting brackish water second discharging
Mouthful, the crystallizer is equipped with first charging aperture and second charging aperture, first for exporting brackish water for being passed through brackish water
Discharge port and the second discharge port, the third discharge port for exporting secondary steam and for exporting primary steam condensed water the 4th
Discharge port, the second steam generator are equipped with for being passed through the first charging aperture of secondary steam, cold for being passed through primary steam
The second charging aperture of condensate, the first discharge port for exporting secondary steam condensed water and second for exporting steam three times go out
Material mouth, the steam accumulator are equipped with the discharge port for being passed through the feed inlet of steam three times and output steam, the thickener
Equipped with the feed inlet for being passed through brackish water and the discharge port for exporting brackish water, the centrifuge is equipped with for being passed through saliferous
The feed inlet of water and the first discharge port for exporting crystal salt；
The discharge port of the preheater is connected to the first charging aperture of the heater, the discharge port of the heater and institute
The feed inlet connection of separator is stated, the first discharge port of the separator is connected to the first charging aperture of the crystallizer, described
Second discharge port of separator is connected to the feed inlet of the gypsum dehydration machine, the second discharge port of the gypsum dehydration machine and institute
The second charging aperture connection of crystallizer is stated, the first discharge port of the crystallizer passes through the forced circulation pump and the heater
Second charging aperture connection, the second discharge port of the crystallizer is connected to the feed inlet of the thickener, the thickener
Discharge port is connected to the feed inlet of the centrifuge, and the of the third discharge port of the crystallizer and the second steam generator
The connection of one feed inlet, the 4th discharge port of the crystallizer is connected to the second charging aperture of the second steam generator, described
First discharge port of second steam generator is connected to the second charging aperture of the preheater, and the of the second steam generator
Two discharge ports are connected to the feed inlet of the steam accumulator.
The beneficial effects of the utility model are:
(1) evaporative crystallization to high-salt wastewater is able to achieve by the pressure of steam pressure conversion process, realizes steam pressure
The high efficiente callback of energy utilizes, and passes through thermal energy and convert, and realizes that steam accumulator stablizes the steam for exporting constant pressure, such mode
The operation energy consumption of evaporative crystallization is greatly lowered, than the operation energy that existing traditional approach saves 70% or more evaporated crystallization device
Consumption, thus thoroughly change China's steam pressure can waste, nowhere available situation, while solving the disposition of China's high-salt wastewater
The problem for taking operating cost valuableness realizes that the overall efficiency of industry is promoted.
(2) that realizes the high-salt wastewater for China based on sodium sulphate and sodium chloride component divides salt purification, device to pass through
Crystal seed preventing fouling is introduced, to realize that evaporative crystallization generates technical grade purity sodium chloride, while by-product gypsum, realizes crystal salt
Abraum salt recycling reaches technical grade reuse standard, thoroughly solves harm of the harmful substance to environment in abraum salt.
Based on the above technical solution, the utility model can also do following improvement.
Further, the crystallizer is additionally provided with the third feed inlet for being passed through mother liquor, and the centrifuge, which is additionally provided with, to be used for
The second discharge port of mother liquor is exported, the second discharge port of the centrifuge is connected to the third feed inlet of the crystallizer.
Further, the preheater is using three-phase flow point effect preheating good antiscale property heat exchanger.
Further, the forced circulation pump uses suspension type circulating pump.
Further, the gypsum dehydration machine uses vacuum belt machine or plate filter press.
Detailed description of the invention
Fig. 1 is a kind of structural representation of evaporated crystallization device based on steam pressure energy provided by the embodiment of the utility model
Figure.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Fig. 1 is a kind of structural representation of evaporated crystallization device based on steam pressure energy provided by the embodiment of the utility model
Figure, as shown in Figure 1, the device includes preheater, heater, separator, crystallizer, forced circulation pump, gypsum dehydration machine, second level
Steam generator, steam accumulator, thickener and centrifuge；
The preheater be equipped with for be passed through brackish water first charging aperture, second for being passed through secondary steam condensed water
Feed inlet and discharge port for exporting brackish water, the heater are equipped with the first charging aperture and second for being passed through brackish water
Feed inlet, the third feed inlet for being passed through primary steam and the discharge port for exporting brackish water, the separator, which is equipped with, to be used
In the feed inlet, the first discharge port and the second discharge port for exporting brackish water that are passed through brackish water, the gypsum dehydration machine is set
There are the feed inlet for being passed through brackish water, the first discharge port for exporting gypsum and for exporting brackish water second discharging
Mouthful, the crystallizer is equipped with first charging aperture and second charging aperture, first for exporting brackish water for being passed through brackish water
Discharge port and the second discharge port, the third discharge port for exporting secondary steam and for exporting primary steam condensed water the 4th
Discharge port, the second steam generator are equipped with for being passed through the first charging aperture of secondary steam, cold for being passed through primary steam
The second charging aperture of condensate, the first discharge port for exporting secondary steam condensed water and second for exporting steam three times go out
Material mouth, the steam accumulator are equipped with the discharge port for being passed through the feed inlet of steam three times and output steam, the thickener
Equipped with the feed inlet for being passed through brackish water and the discharge port for exporting brackish water, the centrifuge is equipped with for being passed through saliferous
The feed inlet of water and the first discharge port for exporting crystal salt；
The discharge port of the preheater is connected to the first charging aperture of the heater, the discharge port of the heater and institute
The feed inlet connection of separator is stated, the first discharge port of the separator is connected to the first charging aperture of the crystallizer, described
Second discharge port of separator is connected to the feed inlet of the gypsum dehydration machine, the second discharge port of the gypsum dehydration machine and institute
The second charging aperture connection of crystallizer is stated, the first discharge port of the crystallizer passes through the forced circulation pump and the heater
Second charging aperture connection, the second discharge port of the crystallizer is connected to the feed inlet of the thickener, the thickener
Discharge port is connected to the feed inlet of the centrifuge, and the of the third discharge port of the crystallizer and the second steam generator
The connection of one feed inlet, the 4th discharge port of the crystallizer is connected to the second charging aperture of the second steam generator, described
First discharge port of second steam generator is connected to the second charging aperture of the preheater, and the of the second steam generator
Two discharge ports are connected to the feed inlet of the steam accumulator.
Specifically, the main component in the device is described below respectively:
1, preheater: using three-phase flow point effect preheating good antiscale property heat exchanger, which is existing mature technology, in advance
Preheater non-scaling in hot device heat transfer process, brine waste and secondary steam condensed water carry out heat exchange, and recycling secondary steam is cold
Condensate heat, brine waste temperature enter crystallizer after increasing.
2, crystallizer: crystallizer cylinder tank structure, top go out secondary steam outlet, and demister, knot is arranged in tank body top
Brilliant device lower part is divided into salt foot, and salt foot is connect with thickener.
3, thickener: connecting with salt foot, and caching mother liquor, thickener are the solid ratios for being mainly used to improve magma, while
Play the role of remaining degree of supersaturation in particle curing and further consumption magma, thickener is generally divided into three sections: settling section,
Stiff section and cone bottom, after cone bottom magma granularity reaches a certain level, magma enters centrifuge.
4, centrifuge: using 3-foot or piston centrifuge is double-clicked, that realizes crystal salt and water isolates salt, out after salt
It is saturated the regular outlet a part of mother liquor, remaining returns in crystallizer and continues to participate in circulating and evaporating.
5, forced circulation pump: using big flow, low lift suspension type circulating pump, has thermal expansion stress compensation, and vibration is made an uproar
Sound is small, and no expansion joint runs smoothly, the feature that big flow, lift are low, power consumption is low.Forced circulation pump realizes that evaporation is saturated dense salt
Solution is forced to form closed cycle with certain speed.
6, separator: separator is the characteristic that strong brine surface is suspended in using gypsum, for being enriched with calcium sulphate crystal, and
Gypsum dehydration machine is retracted to by pipeline from separator interior by suspension calcium sulphate crystal.
7, gypsum dehydration machine: using vacuum belt machine or plate filter press, realizes that gypsum is separated by solid-liquid separation, the saturation after separation
Salting liquid, which returns in crystallizer, continues circulating and evaporating crystallization.
The carrying out practically principle of the device is as follows:
As shown in Figure 1, brine waste enters heater after preheating by secondary steam condensed water, heater is passed through primary height
Steam is pressed, primary steam heats brine waste, and primary steam becomes primary steam condensed water, primary steam condensed water and crystallizer
Secondary steam heat exchange in secondary steam generator, primary steam condensing water vapor are melted into steam three times, and steam enters steaming three times
It is exported after vapour storage heater with constant pressure.
Heater, separator, crystallizer, forced circulation pump form closed cycle, and high-salt wastewater is in forced circulation pumping action
Under, it with the speed loop heating of setting, is concentrated by evaporation, crystallizer generates secondary steam, and secondary steam enters two with certain pressure
In secondary steam generator, positive pressure evaporating state is in crystallizer, outlet secondary steam pressure keeps 0.1MPA or more, crystallizer
Interior saturation mother liquor passes through quiescent settling with certain flow to thickener, thickener, and saturated salt solution enters centrifuge, by centrifugation
Machine dehydration, saturated salt solution returns to crystallizer after dehydration, and crystal salt is outgoing after dehydration.
Separator is on forced circulation pipeline, suspended state gypsum solution is extracted out, gypsum solution passes through gypsum dehydration
After machine dehydration, dehydrated gypsum is outgoing, and the dope after de- gypsum, which returns in crystallizer, continues to participate in circulation.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. a kind of evaporated crystallization device based on steam pressure energy, which is characterized in that including preheater, heater, separator, knot
Brilliant device, forced circulation pump, gypsum dehydration machine, second steam generator, steam accumulator, thickener and centrifuge；
The preheater is equipped with the first charging aperture for being passed through brackish water, the second charging for being passed through secondary steam condensed water
Mouth and the discharge port for exporting brackish water, the heater are equipped with first charging aperture and the second charging for being passed through brackish water
Mouth, the third feed inlet for being passed through primary steam and the discharge port for exporting brackish water, the separator are equipped with for leading to
Feed inlet, the first discharge port and the second discharge port for exporting brackish water for entering brackish water, the gypsum dehydration machine, which is equipped with, to be used
In the feed inlet, the first discharge port for exporting gypsum and the second discharge port for exporting brackish water that are passed through brackish water, institute
Crystallizer is stated equipped with the first charging aperture and second charging aperture, the first discharge port for exporting brackish water for being passed through brackish water
Third discharge port with the second discharge port, for exporting secondary steam and the 4th discharging for exporting primary steam condensed water
Mouthful, the second steam generator is equipped with for being passed through the first charging aperture of secondary steam, for being passed through primary steam condensed water
Second charging aperture, the first discharge port for exporting secondary steam condensed water and for exporting steam three times second discharging
Mouthful, the steam accumulator is equipped with the discharge port for being passed through the feed inlet of steam three times and output constant pressure vapor, the stiff
Device is equipped with the discharge port for being passed through the feed inlet of brackish water and for exporting brackish water, and the centrifuge is equipped with to be contained for being passed through
The feed inlet of salt water and the first discharge port for exporting crystal salt；
The discharge port of the preheater is connected to the first charging aperture of the heater, the discharge port of the heater with described point
Feed inlet connection from device, the first discharge port of the separator are connected to the first charging aperture of the crystallizer, the separation
Second discharge port of device is connected to the feed inlet of the gypsum dehydration machine, the second discharge port and the knot of the gypsum dehydration machine
The second charging aperture of brilliant device is connected to, the first discharge port of the crystallizer pass through the forced circulation pump and the heater the
The connection of two feed inlets, the second discharge port of the crystallizer are connected to the feed inlet of the thickener, the discharging of the thickener
Mouthful be connected to the feed inlet of the centrifuge, the third discharge port of the crystallizer and the second steam generator first into
Material mouth connection, the 4th discharge port of the crystallizer are connected to the second charging aperture of the second steam generator, the second level
First discharge port of steam generator is connected to the second charging aperture of the preheater, and the second of the second steam generator goes out
Material mouth is connected to the feed inlet of the steam accumulator.
2. the evaporated crystallization device according to claim 1 based on steam pressure energy, which is characterized in that the crystallizer is also
Equipped with the third feed inlet for being passed through mother liquor, the centrifuge is additionally provided with the second discharge port for exporting mother liquor, it is described from
Second discharge port of scheming is connected to the third feed inlet of the crystallizer.
3. the evaporated crystallization device according to claim 1 or 2 based on steam pressure energy, which is characterized in that the preheating
Device is using three-phase flow point effect preheating good antiscale property heat exchanger.
4. the evaporated crystallization device according to claim 1 or 2 based on steam pressure energy, which is characterized in that the pressure
Circulating pump uses suspension type circulating pump.
5. the evaporated crystallization device according to claim 1 or 2 based on steam pressure energy, which is characterized in that the gypsum
Dewaterer uses vacuum belt machine or plate filter press.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821829548.7U CN209396925U (en) | 2018-11-07 | 2018-11-07 | A kind of evaporated crystallization device based on steam pressure energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821829548.7U CN209396925U (en) | 2018-11-07 | 2018-11-07 | A kind of evaporated crystallization device based on steam pressure energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204778A (en) * | 2020-03-30 | 2020-05-29 | 岳阳昌盛工贸有限公司 | Production process of anhydrous sodium sulfite |
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2018
- 2018-11-07 CN CN201821829548.7U patent/CN209396925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204778A (en) * | 2020-03-30 | 2020-05-29 | 岳阳昌盛工贸有限公司 | Production process of anhydrous sodium sulfite |
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Granted publication date: 20190917 Termination date: 20211107 |