CN211644665U - Strong brine evaporation system based on direct heat transfer of particle heat carrier - Google Patents
Strong brine evaporation system based on direct heat transfer of particle heat carrier Download PDFInfo
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- CN211644665U CN211644665U CN201921841293.0U CN201921841293U CN211644665U CN 211644665 U CN211644665 U CN 211644665U CN 201921841293 U CN201921841293 U CN 201921841293U CN 211644665 U CN211644665 U CN 211644665U
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- strong brine
- heat transfer
- heating chamber
- evaporator
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Abstract
The utility model discloses a strong brine evaporation system based on granule heat carrier direct heat transfer, including the air-blower that connects gradually, the combustion chamber, plenum and heating chamber, plenum and the heating chamber of setting above the plenum constitute circulating fluidized bed, circulating fluidized bed's upper end is connected cyclone's air inlet, its air outlet of cyclone is connected with the sack cleaner, cyclone's ash falling mouth links to each other with the strong brine evaporator, strong brine evaporator's lower extreme is linked together with the lower part of heating chamber, strong brine evaporator is connected with the strong brine tank, one side of heating chamber is connected with the benefit sand silo. The utility model discloses a gravel is as circulating material and heat transfer carrier, with the direct heat transfer of strong brine, during the salt is sneak into the gravel after appearing, does not influence technology continuation operation, and the salt drops when moving jointly with the gravel and is taken away by the flue gas, is caught the recovery by the sack dust removal, has solved the scale deposit problem of strong brine evaporation, can realize long-term steady operation.
Description
Technical Field
The utility model relates to a strong brine evaporation system based on granule heat carrier direct heat transfer.
Background
A certain amount of concentrated brine is finally generated in water treatment, and the concentrated evaporation is carried out by adopting multiple effects or MVR (mechanical vapor recompression) and other modes in the prior art, but the scaling problem is inevitably generated, so that the production efficiency is sharply reduced, and even the normal operation of equipment is influenced. Moreover, the whole treatment process has the problem of corrosion due to strong brine; and the concentration and evaporation consume a large amount of energy to generate heat; the treatment process also often causes secondary pollution, and the conventional strong brine evaporation equipment is easy to corrode, scale, block and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a strong brine evaporation system based on granule heat carrier is direct to be conducted heat, solved the scale deposit problem of strong brine evaporation, can realize long-term steady operation.
For realizing above-mentioned purpose, the technical scheme of the utility model a design a strong brine evaporation system based on granule heat carrier direct heat transfer, including the air-blower that connects gradually, the combustion chamber, plenum and heating chamber, plenum and the heating chamber that sets up above the plenum constitute circulating fluidized bed, cyclone's air inlet is connected to circulating fluidized bed's upper end, its air outlet of cyclone is connected with the sack cleaner, cyclone's ash falling mouth links to each other with the strong brine evaporator, strong brine evaporator's lower extreme is linked together with the lower part of heating chamber, strong brine evaporator is connected with the strong brine tank, one side of heating chamber is connected with the benefit sand storehouse. The process adopts the idea of direct contact evaporation of gravel and strong brine, has no scaling problem, and has extremely high heat transfer efficiency due to direct contact. The waste heat of the incineration flue gas can be recovered to produce steam or hot water (namely, a cold water pipeline is arranged in the waste heat boiler, and after the heat transfer of the flue gas, the hot flue gas is in contact with the cold water pipeline for heat conduction and the waste heat is recovered to produce the steam or the hot water), so that the energy waste is avoided. This process core has adopted the grit as cycle material and heat transfer carrier, with the direct heat transfer of strong brine, during the salt is appeared the back and is sneaked into the grit, does not influence the technology and continues to operate, and the salt drops when moving with the grit jointly and is taken away by the flue gas, is caught the recovery by the sack dust removal, has solved the scale deposit problem of strong brine evaporation, can realize long-term steady operation.
A waste heat boiler for recovering the waste heat of the flue gas is arranged between the cyclone separator and the bag-type dust collector; the air outlet of the bag-type dust collector is connected with the chimney through the air blower.
The further technical scheme is that a plurality of strong brine nozzles are arranged in a strong brine evaporator and are connected with a strong brine tank through pipelines, valves are arranged on the pipelines, and the atomization pressure of the strong brine is 2.5 Mpa; natural gas or blast furnace gas or coke oven gas for combustion is introduced into the combustion chamber; the sand-supplementing bin is internally provided with stones with the particle size of 1.5-2.0 mm. The strong brine evaporator is made of high-temperature-resistant titanium alloy materials, the strong brine nozzles are arranged in three layers, five rows of nozzles are arranged on each layer, in order to enable the grain diameter of the strong brine to be fine enough, the atomization pressure of the strong brine is 2.5MPa, the atomization pressure is improved, the atomization grain diameter of the strong brine is reduced, the surface area of the strong brine is increased, and the strong brine is evaporated quickly.
The process flow is as follows: the method comprises the steps of pressurizing high-temperature flue gas (about 1000 ℃) generated by burning natural gas (or blast furnace gas, coke oven gas and the like) and then feeding the high-temperature flue gas into a fluidizing air chamber, fluidizing and heating stones with the particle size of 1.5-2.0 mmmm as heat transfer carriers, heating the heat transfer carriers to about 700 ℃, enabling sand to enter a cyclone separator along with the flue gas, separating the sand and entering an evaporator, arranging a plurality of layers of strong brine nozzles in the evaporator, uniformly mixing strong brine and the sand after pressure atomization, rapidly evaporating water, circulating salt along with the sand, and falling off salt scale attached to gravel in the circulating process and being taken away by the flue gas. The high-temperature flue gas at 700 ℃ enters a waste heat boiler after passing through a separator, the temperature is reduced to about 140 ℃, and then the flue gas is discharged after being subjected to bag-type dust removal and purification. The salt is captured by the bag-type dust collector along with the operation of the flue gas.
The utility model has the advantages and the beneficial effects that:
(1) the stones are used as heat carriers, the small stones are resistant to corrosion, and the whole treatment process has no corrosion problem.
(2) After the salt is accumulated on the stones, the salt falls off in collision and friction motions of the stones and is carried away by smoke, so that the stones can be repeatedly used.
(3) The water vapor evaporated by the flue gas and the strong brine is respectively discharged, and the waste heat can be recycled. The salt can be treated in a centralized way after being collected by a bag-type dust collector.
(4) Because the natural gas is combusted in the combustion chamber, and enters the heating chamber after the temperature is adjusted by air distribution, the flame does not directly contact with the salt, and the salt is not decomposed.
(5) The whole process of evaporation treatment of the strong brine does not produce secondary pollution.
(6) By adopting the technical scheme, the problem that the conventional strong brine evaporation equipment is easy to corrode, scale, block and the like and is difficult to solve is thoroughly solved.
(7) Other low grade gas, such as blast furnace gas, may be used.
(8) The idea of direct contact evaporation of gravel and strong brine is adopted, the scaling problem is avoided, and meanwhile, the heat transfer efficiency is extremely high due to direct contact. This process core has adopted the grit as cycle material and heat transfer carrier, with the direct heat transfer of strong brine, during the salt is appeared the back and is sneaked into the grit, does not influence the technology and continues to operate, and the salt drops when moving with the grit jointly and is taken away by the flue gas, is caught the recovery by the sack dust removal, has solved the scale deposit problem of strong brine evaporation, can realize long-term steady operation.
(9) Increasing the atomization pressure helps to reduce the atomization particle size of the strong brine, increase the surface area of the strong brine and enable the strong brine to evaporate quickly.
Drawings
Fig. 1 is a schematic diagram of a strong brine evaporation system based on direct heat transfer of a particle heat carrier.
In the figure: 1. a blower; 2. a combustion chamber; 3. an air chamber; 4. a heating chamber; 5. a cyclone separator; 6. a bag-type dust collector; 7. a strong brine evaporator; 8. a concentrated brine tank; 9. a sand replenishing bin; 10. a waste heat boiler; 11. a valve; 12. a chimney; 13. and a strong brine nozzle.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the utility model relates to a strong brine evaporation system based on direct heat transfer of granule heat carrier, including air-blower 1 that connects gradually, combustion chamber 2, plenum 3 and heating chamber 4, plenum 3 and the heating chamber 4 that sets up in plenum 3 top constitute circulating fluidized bed, circulating fluidized bed's upper end is connected cyclone 5's air inlet, its air outlet of cyclone 5 is connected with sack cleaner 6, cyclone 5's ash falling mouth links to each other with strong brine evaporator 7, strong brine evaporator 7's lower extreme is linked together with heating chamber 4's lower part, strong brine evaporator 7 is connected with strong brine case 8, one side of heating chamber 4 is connected with benefit sand silo 9. A waste heat boiler 10 for recovering the waste heat of the flue gas is arranged between the cyclone separator 5 and the bag-type dust collector 6; the air outlet of the bag-type dust collector 6 is connected with a chimney 12 through an air blower 1. A plurality of strong brine nozzles 13 are arranged in the strong brine evaporator 7, the strong brine nozzles 13 are connected with a strong brine tank 8 through pipelines, valves 11 are arranged on the pipelines, and the atomization pressure of strong brine is 2.5 Mpa; natural gas or blast furnace gas or coke oven gas for combustion is introduced into the combustion chamber 2; stones with the grain diameter of 1.5-2.0 mm are arranged in the sand supplementing bin 9.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The strong brine evaporation system based on direct heat transfer of the particle heat carrier is characterized by comprising an air blower, a combustion chamber, an air chamber and a heating chamber which are sequentially connected, wherein the air chamber and the heating chamber arranged above the air chamber form a circulating fluidized bed, the upper end of the circulating fluidized bed is connected with an air inlet of a cyclone separator, an air outlet of the cyclone separator is connected with a bag-type dust remover, an ash falling port of the cyclone separator is connected with a strong brine evaporator, the lower end of the strong brine evaporator is communicated with the lower part of the heating chamber, the strong brine evaporator is connected with the strong brine tank, and one side of the heating chamber is connected with a sand replenishing bin.
2. The concentrated brine evaporation system based on direct heat transfer of particle heat carriers as claimed in claim 1, wherein a waste heat boiler for recovering the waste heat of flue gas is arranged between the cyclone separator and the bag-type dust collector; the air outlet of the bag-type dust collector is connected with the chimney through the air blower.
3. The strong brine evaporation system based on direct heat transfer of particle heat carriers as claimed in claim 2, wherein a plurality of strong brine nozzles are arranged in the strong brine evaporator, the strong brine nozzles are connected with a strong brine tank through pipelines, and valves are arranged on the pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921841293.0U CN211644665U (en) | 2019-10-30 | 2019-10-30 | Strong brine evaporation system based on direct heat transfer of particle heat carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921841293.0U CN211644665U (en) | 2019-10-30 | 2019-10-30 | Strong brine evaporation system based on direct heat transfer of particle heat carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211644665U true CN211644665U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921841293.0U Expired - Fee Related CN211644665U (en) | 2019-10-30 | 2019-10-30 | Strong brine evaporation system based on direct heat transfer of particle heat carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211644665U (en) |
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2019
- 2019-10-30 CN CN201921841293.0U patent/CN211644665U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 Termination date: 20211030 |