CN208308808U - A kind of solvent recovery unit - Google Patents
A kind of solvent recovery unit Download PDFInfo
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- CN208308808U CN208308808U CN201820630471.4U CN201820630471U CN208308808U CN 208308808 U CN208308808 U CN 208308808U CN 201820630471 U CN201820630471 U CN 201820630471U CN 208308808 U CN208308808 U CN 208308808U
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Abstract
The utility model discloses a kind of solvent recovery unit, including condenser, compensator, absorption tower, condensing tower, freezing tower, the air inlet pipe for solvent vapour to be recycled input is provided with above condenser, condenser is used for the condensation of solvent vapour；It is connected below compensator and condenser, compensator is used for the balance and stability of the residual solvent steam after condenser condenses to form it into free gas；It is connected below absorption tower with compensator, absorption of the absorption tower for solvent in free gas；It is connected above condensing tower with absorption tower top, first condensation of the condensing tower for the free gas after the lyosoption of absorption tower；It is connected below freezing tower with condensing tower lower section, again condensation of the freezing tower for the free gas after the lyosoption of absorption tower；Condenser, compensator, absorption tower, condensing tower, freezing tower bottom are provided with for condensate drain derived from solvent after condensing.The solvent recovery unit can effectively realize the condensing recovery of n-hexane steam.
Description
Technical field
The utility model relates to chemical fields, more specifically, in particular to a kind of solvent recovery unit.
Background technique
Leaching refining method is to select certain that can dissolve the organic solvent of grease, by oil plant using the principle of extraction
Contact (impregnate or spray), a kind of method for producing oil for making the grease in oil plant be extracted out.The basic mistake of leaching refining method
Journey is that first oil plant embryo (or pre-pressed cake) is dipped in selected solvent, and lipid solubilization is then made to form miscella in solvent, then
Miscella is separated with solid residue (dregs of rice), miscella is evaporated according to different boiling points finally, is stripped, solvent evaporation is made
Become steam to separate with oil, to obtain grease (Extractive crudeoil).Wherein, solvent vapour is then subsequent by condensation, cooling recycling
It is continuous to use.Since leaching refining method is high with oil yield, the plurality of advantages such as labor intensity is low, therefore obtained extensively in liquefaction field
General adaptation.
Presently, the solvent generallyd use in leaching refining method be with n-hexane No. 6 extraction solvents as main component,
N-hexane is and cheap to grease good dissolubility, and source is sufficient, therefore worldwide generally uses.It is practical
In operation, due to lacking the solvent recovery unit specifically for n-hexane in the prior art, in this way, part is caused to contain n-hexane
Steam be disposed in atmosphere, and n-hexane has certain toxicity and cumulative effect, can enter from respiratory tract and skin
Human body generates 2,5- acetyl butyryl by liver metabolism, influences human central nervous system and motor nerve cells and cause in human body
Poison significantly impacts the health of human body；In addition, n-hexane steam can destroy ozone through photochemical degradating in an atmosphere, easily
The pollution of environment is caused to destroy, after many years scientific research and investigation, nineteen ninety U.S. Clean Air Act case formally will just
Hexane is classified as one of 189 air pollution harmful substances.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of solvent recovery unit, which passes through it
Structure design, can effectively realize the condensing recovery of n-hexane steam, effectively prevent it to affect human health, avoid it
Pollute the environment destruction.
A kind of solvent recovery unit, including condenser, compensator, absorption tower, condensing tower, freezing tower, in which:
The air inlet pipe for solvent vapour to be recycled input is provided with above the condenser, the condenser is used for solvent
The condensation of steam；
It is connected below the compensator and the condenser, the compensator is used for remaining after condenser condensation
The balance and stability of solvent vapour is to form it into free gas；
It is connected below the absorption tower with the compensator, absorption of the absorption tower for solvent in free gas；
It is connected above the condensing tower with above the absorption tower, the condensing tower is used to absorb through the absorption tower molten
The first condensation of free gas after agent；
It is connected below the freezing tower with below the condensing tower, the freezing tower is used to absorb through the absorption tower molten
The condensation again of free gas after agent；
The condenser, the compensator, the absorption tower, the condensing tower, the freezing tower bottom are provided with use
The condensate drain derived from solvent after condensation.
Preferably, it is provided with cooling water ingress pipe below the condenser, is provided with cooling water above the condenser and leads
Outlet pipe.
Preferably, it is provided with the first gas-guide tube communicated with outside at the top of the compensator, is set in first gas-guide tube
It is equipped with first check-valve.
Preferably, first gas distributor, the absorption tower are provided at the gas access below the absorption tower inner cavity
It is provided with stainless steel cloth packing layer and cooling water distributor above inner cavity and the cooling water distributor is located at the stainless steel
Above wire packing layer.
Preferably, ice water tank, the ice water tank and the condensing tower are communicated with outside the condensing tower and the freezing tower
Between be provided with water pump, be provided with compression refigerating machine between the ice water tank and the freezing tower.
Preferably, second gas distributor, the freezing tower are provided at the gas access below the freezing tower inner cavity
It is provided with coil pipe above inner cavity, the coil pipe is connected with the ice water tank and the compression refigerating machine.
Preferably, the freezing top of tower is provided with the second gas-guide tube communicated with outside, sets in second gas-guide tube
It is equipped with second check-valve.
The beneficial effects of the utility model are: the solvent recovery unit provided by the utility model is designed by its structure,
The condensing recovery that can effectively realize n-hexane steam, effectively prevent it to affect human health, it is avoided to make environment
It is destroyed at pollution.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the overall structure diagram of solvent recovery unit disclosed in the utility model embodiment.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.
Based on the embodiment in the application, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present application.
In the description of the present invention, it should be understood that term " top ", " bottom ", " top ", " lower section ",
The orientation or positional relationship of the instructions such as "left", "right" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
State the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore should not be understood as limiting the present invention.
A kind of specific embodiment of solvent recovery unit of the utility model is provided referring to Fig. 1, Fig. 1, wherein Fig. 1 is this
The overall structure diagram of solvent recovery unit disclosed in utility model embodiment.
As shown in Figure 1, solvent recovery unit provided in this embodiment is able to achieve effective recycling of solvent.Solvent recovery dress
It sets including condenser 1, compensator 2, absorption tower 3, condensing tower 4, freezing tower 5, condenser 1, compensator 2, absorption tower 3, condensing tower
4, freezing 5 bottom of tower is provided with for condensate drain 6 derived from solvent after condensing.
In Fig. 1, arrow direction indicates the flow direction of water or gas, wherein condenser 1, compensator 2, absorption tower in Fig. 1
3, condensing tower 4, freezing tower 5 are arranged successively from left to right.
In the present embodiment, the air inlet pipe 101 for solvent vapour to be recycled input, condenser 1 are provided with above condenser 1
Condensation for solvent vapour.Leftmost tower body is condenser 1 in Fig. 1.
It is connected below compensator 2 and condenser 1, compensator 2 is used for the flat of after the condensation of condenser 1 residual solvent steam
Weighing apparatus is stablized to form it into free gas.In this way, fat extracting solvent steam contains a small amount of solvent after the condensation of condenser 1
Gas enters compensator 2 and forms free gas.
3 lower section of absorption tower is connected with compensator 2, absorption of the absorption tower 3 for solvent in free gas.The present embodiment
In, it is provided with first gas distributor 301 at the gas access below 3 inner cavity of absorption tower, so that free gas can be along absorption
The entire inner cavity lower section of tower 3 up flows, meanwhile, be provided with above 3 inner cavity of absorption tower stainless steel cloth packing layer 302 with it is cold
But water distributor 303, cooling water distributor 303, which is conducted with external coolant intake pipe and cools down water distributor 303, to be located at
302 top of stainless steel cloth packing layer.
Rise after gas distributor 301 to 3 middle part of absorption tower, top in this way, free gas enters 3 bottom of absorption tower,
The cooling water at 3 top of absorption tower uniformly declines after cooling water distributor 303, the stainless steel cloth packing layer at 3 middle part of absorption tower
302 come into full contact with the cooling water of the free gas risen and decline, and cooling water is rapid by solvent remaining in free gas
Condensed absorbent entrainment is fallen down, and absorbs the water to get off and solvent enters condensate drain 6 and exports to the processing of peripheral hardware diversion box, free gas
Body go successively to 3 rear of absorption tower be connected congeal in tower 4.
The top of condensing tower 4 be connected above absorption tower 3, condensing tower 4 is for the free gas after 3 lyosoption of absorption tower
First condensation.Freezing tower 5 lower section be connected below condensing tower 4, freezing tower 5 is used for free after 3 lyosoption of absorption tower
The condensation again of gas.The tower body of rightmost is to freeze tower 5 in Fig. 1.
In the present embodiment, it is communicated with ice water tank 7 outside condensing tower 4 and freezing tower 5, is arranged between ice water tank 7 and condensing tower 4
There is water pump 8, is provided with compression refigerating machine 9 between ice water tank 7 and freezing tower 5.It freezes and is arranged at the gas access below 5 inner cavity of tower
There is second gas distributor 501, freezing is provided with coil pipe 502, coil pipe 502 and ice water tank 7 and compression refigerating machine above 5 inner cavity of tower
9 are connected.
Specifically, it congeals and is provided with cooling tubulation in tower 4 to transmit chilled water, chilled water is cooling medium, and chilled water is
Freezed by compression refigerating machine 9 and obtained, free gas is congealed in tower 4 after chilled water heat exchange, what solvent contained therein will become
Seldom, then free gas is further continued for flow direction freezing tower 5.
Free gas after second gas distributor 501 to freezing tower 5 above flow, due to freezing tower 5 inside be equipped with
Coil pipe 502, the pipe of coil pipe 502 is interior using the refrigerant compressed through compression refigerating machine 9, these refrigerants can freeze and flow through coil pipe
The free gas of 502 tube sides, at this moment if also containing solvent in free gas, these solvents, which will condense, is adhered to coil pipe 502
On outer wall, then drips to export through condensate drain 6 and collect.
In the present embodiment, to further facilitate the input and output in condenser 1 as the cooling water of cooling medium, facilitate cold
But the circulation of water, it is preferable that be provided with cooling water ingress pipe 102 below condenser 1, be provided with cooling water above condenser 1 and lead
Outlet pipe 103.
In the present embodiment, to ensure that the air pressure in compensator 2 may remain in preset pressure, it is preferable that 2 top of compensator
It is provided with the first gas-guide tube 201 communicated with outside, is provided with first check-valve 202 in the first gas-guide tube 201.
In the present embodiment, freeze be provided at the top of tower 5 with external the second gas-guide tube 503 communicated, in the second gas-guide tube 503
It is provided with second check-valve 504.
Specifically, if according to normal condensing recovery process, contained solvent itself in free gas in arrival freezing tower 5
Extremely pettiness, and recovery system pressure reaches tiny structure, the condensate drain 6 that solvent vapour has all been arranged through each tower body bottom
Export, the second check-valve 504 for being mounted on 5 top of freezing tower are in close state.
But once unusual condition occurs in condensing recovery process, internal system will generate positive pressure once in a while, at this point, second
Check-valves 504 opens release, to make whole system pressure balance, then gradually condenses again, freezing forms tiny structure.
A kind of solvent recovery unit provided by the utility model is described in detail above.Tool used herein
Body example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand
The method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not taking off
Under the premise of from the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification
It also falls into the protection scope of the utility model claims.
Claims (7)
1. a kind of solvent recovery unit, which is characterized in that including condenser, compensator, absorption tower, condensing tower, tower is freezed,
In:
The air inlet pipe for solvent vapour to be recycled input is provided with above the condenser, the condenser is used for solvent vapour
Condensation；
It is connected below the compensator and the condenser, the compensator is used for the residual solvent after condenser condensation
The balance and stability of steam is to form it into free gas；
It is connected below the absorption tower with the compensator, absorption of the absorption tower for solvent in free gas；
It is connected above the condensing tower with above the absorption tower, the condensing tower is used for after the absorption tower lyosoption
The first condensation of free gas；
It is connected below the freezing tower with below the condensing tower, the freezing tower is used for after the absorption tower lyosoption
The condensation again of free gas；
The condenser, the compensator, the absorption tower, the condensing tower, the freezing tower bottom are provided with for cold
Condensate drain derived from solvent after solidifying.
2. solvent recovery unit according to claim 1, which is characterized in that be provided with cooling water below the condenser and lead
Enter pipe, is provided with cooling water delivery line above the condenser.
3. solvent recovery unit according to claim 1, which is characterized in that be provided at the top of the compensator and external phase
The first logical gas-guide tube is provided with first check-valve in first gas-guide tube.
4. solvent recovery unit according to claim 1, which is characterized in that the gas access below the absorption tower inner cavity
Place is provided with first gas distributor, and stainless steel cloth packing layer and cooling water distributor are provided with above the absorption tower inner cavity
And the cooling water distributor is located above the stainless steel cloth packing layer.
5. solvent recovery unit according to claim 1, which is characterized in that connect outside the condensing tower and the freezing tower
It is connected with ice water tank, water pump is provided between the ice water tank and the condensing tower, is set between the ice water tank and the freezing tower
It is equipped with compression refigerating machine.
6. solvent recovery unit according to claim 5, which is characterized in that the gas access below the freezing tower inner cavity
Place is provided with second gas distributor, and coil pipe, the coil pipe and the ice water tank and institute are provided with above the freezing tower inner cavity
Compression refigerating machine is stated to be connected.
7. solvent recovery unit according to claim 1, which is characterized in that the freezing top of tower is provided with and external phase
The second logical gas-guide tube is provided with second check-valve in second gas-guide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820630471.4U CN208308808U (en) | 2018-04-28 | 2018-04-28 | A kind of solvent recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820630471.4U CN208308808U (en) | 2018-04-28 | 2018-04-28 | A kind of solvent recovery unit |
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| Publication Number | Publication Date |
|---|---|
| CN208308808U true CN208308808U (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820630471.4U Active CN208308808U (en) | 2018-04-28 | 2018-04-28 | A kind of solvent recovery unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384636A (en) * | 2018-04-28 | 2018-08-10 | 湖南淳湘农林科技有限公司 | A kind of solvent recovery unit |
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2018
- 2018-04-28 CN CN201820630471.4U patent/CN208308808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384636A (en) * | 2018-04-28 | 2018-08-10 | 湖南淳湘农林科技有限公司 | A kind of solvent recovery unit |
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