CN105254103B - A kind of classifying and reclaiming system and method for tin removal waste liquor - Google Patents
A kind of classifying and reclaiming system and method for tin removal waste liquor Download PDFInfo
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- CN105254103B CN105254103B CN201510741525.5A CN201510741525A CN105254103B CN 105254103 B CN105254103 B CN 105254103B CN 201510741525 A CN201510741525 A CN 201510741525A CN 105254103 B CN105254103 B CN 105254103B
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Abstract
A kind of classifying and reclaiming system for tin removal waste liquor of the present invention includes suction filtration system, ageing filter, constant temperature distiller and cooling collecting tank, by being aged flocculation, centrifugation suction filtration, vacuum distillation is separated, cooling is collected in integration, stannic acid, nitrate and nitric acid are isolated step by step, make full use of decompressor to play depressurization in multistage exhausting section, improve decompression efficiency；Using centrifugation and low pressure suction filtration and ageing flocculation integrated device system, the efficiency of separation stannic acid precipitation is improved.Compared with prior art, mainly with advantages below：1）Neutralized without the use of substantial amounts of alkali, only need to add a small amount of flocculant, it is cost-effective；2）Set of system realizes continuous treatment, and operating efficiency is high；3）Hierarchical classification reclaims stannic acid, nitrate, dust technology, realizes zero emission, the higher environment of creation and economic value；4）System architecture is simply compact, sets ingenious, good separating effect, equipment price is cheap.
Description
Technical field
The present invention relates to tin removal waste liquor recovery technology field, system is reclaimed in more particularly to a kind of classification for tin removal waste liquor
System and tin removal waste liquor recovery method.
Background technology
In PCB（Printed Circuit Board, Chinese is printed circuit board, also known as printed substrate）Make
In technique, subtractive process still accounts for the leading role of PCB pattern transfers, and wiring board is needed first through figure before being etched using outer layer positive
Electroplating technology thickeies the tin layers that figure copper thickness plates one layer of 5~10 μ m-thick again, thus needs to decorporate on figure after positive etching
Tin layers, domestic existing tin technology of moving back utilizes the nitric acid and metal Fe of strong oxidizing property based on nitric acid salt system liquid medicine3+Catalyst
Erosion metallic tin is stung, while adding sulfonate sustained release agent suppresses nitric acid attack copper face, when moving back Sn in tin can2+Ion concentration>80g/L
When, the effect of dissolving tin declines, and need to discharge the stanniferous waste water of high concentration.In the general waste liquid for moving back tin discharge tin ion concentration 80~
130g/L, acid equivalent is in 1~3mol/L, the copper ion containing 20~30g/L.
Nitric acid spent solder stripper treatment technology is flocculated or the inclined tin of precipitating reagent recovery with adding after neutralization precipitation, adjustment waste liquid pH value
Based on acid, sodium stannate and tin ash；Or it is prepared into the stannic acid salt additives with high value, such as patent No. using spent solder stripper
" method that barium stannate trihydrate is prepared using the tin in waste tin stripper " disclosed in CN1241835C；Patent No. CN
101497458A discloses " a kind of method that utilization circuit board tin-stripping wastewater prepares sodium stannate ", by neutralizing sedimentation → filtering alkali
Change → roasting → extracts → refiltering → and washs acquisition sodium stannate product after purification, and this method needs substantial amounts of nertralizer, not right
Wash and handled with the extraction raffinate after extraction, easily cause secondary pollution；As patent No. CN 101497458A are used plus alkali adjustment
The method that flocculant is added after pH value isolates stannic acid in tin removal waste liquor.It refer to add in patent No. ZL102086073A
Plus lime white combination evaporating concentrating method isolates calcium stannate, the calcium stannate that this method is obtained is generally required to be become by secondary smelting
Into tin, metastannic acid or tin ash product of the preparation with industrial value.In alkali N-process is added, introduce a large amount of in waste liquid
The new cation such as sodium, calcium, it is necessary to secondary operation manufactures more valuable stanniferous product, meanwhile, band produces a large amount of nitrate
Waste water, does not add such as processing to easily cause the risk of high-nitrogen waste water.Meanwhile, also there are some to introduce to the tin-stripping wastewater comprehensive reutilization that gives up
Technology, disclose that " a kind of tin removal waste liquor reclaims tin and new tin stripper is prepared in circulation such as the A of Patent No. CN 103225078
System and method ", by vapours so that stannic acid is precipitated, centrifugal filtration, nitric acid is decomposed by after the absorption of absorption tower, passing through adjustment
It is recovered to move back in molten tin bath and recycles.Because stannic acid precipitation or stannic acid flocculate are formed by the aggregation of stannic acid colloidal particles, filter opening is empty
Gap is very small, is difficult so that the cake layer that filtrate is accumulated by extra small particulate, filter efficiency is low by single centrifugation or press filtration.
Therefore, there is problem for of the prior art, offer is provided badly and a kind of nitric acid spent solder stripper classified back
The recovery technology for receiving, realizing zero emission is particularly important.
The content of the invention
A kind of classification for tin removal waste liquor is provided it is an object of the invention to avoid weak point of the prior art
Retracting device.
The purpose of the present invention is achieved through the following technical solutions：
A kind of classifying and reclaiming system for tin removal waste liquor, include suction filtration system, ageing filter, constant temperature distiller and
Cool down collecting tank,
Suction filtration system includes vavuum pump and pipeline, and pipeline is equiped with valve；
Ageing filter is provided with ageing filter chamber, porous tophan box, filter bag, heater and centrifugal driving device, many
Hole tophan box is installed in ageing filter chamber and driven by centrifugal driving device, and filter bag is arranged in porous tophan box, waste water
The opening of feed pipe and settling agent sample feeding pipe is towards inside filter bag；
Constant temperature distiller is provided with wedged bottom distillery and constant temperature heating device, and wedged bottom distillery passes through pipe with ageing filter chamber
Road is connected, and the inclined-plane bottom of wedged bottom distillery is provided with crystallization discharge valve；
Cooling collecting tank is provided with fluid reservoir and cooling device, and cooling device makes retort gas cold for cooling down fluid reservoir
Solidifying, fluid reservoir is connected with wedged bottom distillery；
The vavuum pump of suction filtration system passes through pipeline communication with fluid reservoir.
It is preferred that, centrifugal driving device is made up of motor and centrifugation dead axle, and the bottom of centrifugation dead axle and porous tophan box is consolidated
Connect, motor driving centrifugation fixed-axis rotation.
It is preferred that, heater is arranged at the bottom of ageing filter chamber, and heater is located at porous tophan box and filtered with ageing
Between room.
It is preferred that, surge chamber is provided between fluid reservoir and vavuum pump.
It is preferred that, the bottom surface of wedged bottom distillery is set to the inclined-plane that gradient is 30 ~ 60 °.
It is preferred that, ageing filter chamber, porous tophan box and filter bag are by polytetrafluoroethylene (PTFE), polyphenylene sulfide（PPS）In
One or two be made.
A kind of classification of tin removal waste liquor is provided another object of the present invention is to avoid weak point of the prior art
Recovery method, using the above-mentioned classifying and reclaiming system for tin removal waste liquor, includes following steps：
（1）Waste liquid is delivered
By in tin removal waste liquor injection ageing filter；
（2）Flocculation centrifugal filtration
Concentration is added in 1%~5% flocculant as settling agent, settling agent is with tin removal waste liquor flows per unit time 1:
1000~1:100 so that flocculant absorption stannic acid colloid sedimentation；Ageing filter chamber is heated to 50~80 DEG C, centrifugal driving device
Drive porous tophan box to rotate to be centrifuged, filtrate flows to constant temperature distiller；
（3）Filtrate decompression is distilled
Filtrate is in constant temperature distiller, and control vapo(u)rizing temperature is subtracted at 80~100 DEG C by the pressure of taking out of vavuum pump and pipeline
Pressure distillation, condensing crystallizing component is gathered in crystallization discharge valve by the inclined-plane of bottom under gravity, and gas is received in cooling
Collect tank condensation to reclaim.
It is preferred that, step（2）Middle settling agent controls settling agent concentration after mixing to be 10~50ppm with tin removal waste liquor.
It is furthermore preferred that after the heater starting of ageing filter chamber, constant temperature stands 1h.
It is furthermore preferred that the constant temperature heating device of constant temperature distiller is water bath thermostat.
Beneficial effects of the present invention：
A kind of classifying and reclaiming system for tin removal waste liquor of the present invention includes suction filtration system, ageing filter, constant temperature
Distiller and cooling collecting tank, by being aged flocculation, centrifugation suction filtration, vacuum distillation is separated, cooling is collected in integration, is divided step by step
Stannic acid, nitrate and nitric acid are separated out, makes full use of decompressor to play depressurization in multistage exhausting section, decompression energy is improved
Effect；Using centrifugation and low pressure suction filtration and ageing flocculation integrated device, the efficiency of separation stannic acid precipitation is improved.Meanwhile, the present invention
Vacuum distillation device and ageing filter chamber's suction filtration centrifugation are acted on using a vacuum system, filtrate is taken out pressure while also acting as
Process after to whole system, causes stannic acid to be separated with nitrate solution by centrifugation with suction filtration double action；Steamed again by depressurizing
Evaporate and separate and collect nitric acid weak solution and nitrate with condensing unit.Compared with prior art, mainly with advantages below：
1）Neutralized without the use of a large amount of alkali, only need to add a small amount of flocculant, it is cost-effective；
2）Set of system realizes continuous treatment, and operating efficiency is high；
3）Hierarchical classification reclaims stannic acid, nitrate, dust technology, realizes zero emission, creates higher environment and economy
Value；
4）System architecture is simply compact, sets ingenious, good separating effect, equipment price is cheap.
Brief description of the drawings
Using accompanying drawing, the present invention will be further described, but the content in accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is a kind of structural representation of one embodiment of classifying and reclaiming system for tin removal waste liquor of the present invention.
Include in Fig. 1：
A- tin removal waste liquor entrances；B- settling agent entrances；
100- is aged filter：101- ageing filter chamber, the porous tophan boxes of 102-, 103- filter bags, 104- centrifugation dead axle,
105- heaters, 106- motor, 107- cappings；
200- constant temperature distillers：201- wedged bottoms distillery, 202- constant temperature heating devices, 203- crystallization discharge valves；
300- cools down collecting tank：301- cooling devices, 302- fluid reservoirs, 303- surge chambers；
400- suction filtration systems:401- vavuum pumps, 402-407 are valve.
Embodiment
The invention will be further described with the following Examples.
Embodiment 1
As shown in figure 1, the present invention a kind of classifying and reclaiming system for tin removal waste liquor include suction filtration system 400, it is old
Change filter 100, constant temperature distiller 200 and cooling collecting tank 300.
Ageing filter 100 be provided with ageing filter chamber 101, porous tophan box 102, filter bag 103, heater 105 and
Centrifugal driving device, the centrifugal driving device is made up of motor 106 and centrifugation dead axle 104, centrifugation dead axle 104 and porous tophan box
102 bottom is affixed, and the driving centrifugation dead axle 104 of motor 106 is rotated.Filter bag 103 is arranged in porous tophan box 102.Ageing
The main body of filter 100 is ageing filter chamber 101, and ageing filter 101 is driven by the motor 106 and centrifugation dead axle 104 of bottom
The porous tophan box 102 assembled and filter bag 103, are aged the He of waste water sample feeding pipe 402 of the upper end connect band valve of filter chamber 101
Settling agent sample feeding pipe 403, the opening of wastewater feed pipe 402 and settling agent sample feeding pipe 403 is set towards the inside of filter bag 103.
Separated in the centrifugal action of the rotation of motor 106 and by the suction filtration accelerated filtration at valve 404,405, filtrate is full of porous centrifugation
Interlayer between tank 102 and ageing filtering Room 101, heater 105 is thermally formed water bath with thermostatic control, promoting ageing to the filtrate in interlayer
Stannic acid sedimentation in filter chamber 101 in waste liquid, can take out filter bag 103 from top lid mouthful 107 after having filtered and isolate filter residue.
Constant temperature distiller 200 is provided with wedged bottom distillery 201 and constant temperature heating device 202, wedged bottom distillery 201 and ageing
Filter chamber 101 is by pipeline communication, and the locular wall of the inclined-plane bottom of wedged bottom distillery 210 is provided with crystallization discharge valve 203, its
In, the bottom surface of wedged bottom distillery 201 is set to the inclined-plane that gradient is 30 ~ 60 °.Filtrate after ageing filtering is entered by suction filtration
Wedged bottom distillery 201, in the case where the constant temperature heating device 202 of lower end is heated, and through the vacuum distillation at pipeline 406, is realized dense
Sheepshank is brilliant, and crystal is gathered at the crystallization discharge valve 203 of inclined-plane bottom, it is easy to separated.
Cooling collecting tank 300 is provided with fluid reservoir 302 and cooling device 301, and cooling device 301 is used to cool down fluid reservoir
302 condense retort gas, and fluid reservoir 302 is connected with wedged bottom distillery 201.Quilt when gas after distillating passes through fluid reservoir 302
Cooling device 301 liquefies, and prepares a pressure-reducing cushioning room 303 in suction filtration terminal, it is to avoid suction filtration causes the liquid of wedged bottom distillery 201
Overflow；
Suction filtration system 400, contains vavuum pump 401, and whole sealing pipeline and valve, and pipeline is equiped with valve.
Wherein, above-mentioned ageing filter chamber 101, porous tophan box 102 and filter bag 103 are by polytetrafluoroethylene (PTFE), poly- sub- benzene
Base thioether（PPS）One or both of be made, i.e., by resistance to 150 DEG C of high temperature and have erosion-resisting material and be made, the system
It is applicable to the processing of nitric acid type tin-stripping wastewater.
A kind of classified reclaiming method of tin removal waste liquor of the present invention, system is reclaimed using the above-mentioned classification for tin removal waste liquor
System, the classified reclaiming method of the tin removal waste liquor includes following steps：
（1）Waste liquid is delivered
By in tin removal waste liquor injection ageing filter；
（2）Flocculation centrifugal filtration
Concentration is added in 1%~5% flocculant as settling agent, the settling agent added can make anionic polypropylene
Acid amides or cationic-type polyacrylamide；Settling agent is with tin removal waste liquor flows per unit time 1:1000~1:100, settling agent with
Tin removal waste liquor controls settling agent concentration after mixing to be 10~50ppm so that flocculant absorption stannic acid colloid sedimentation；It is aged filter chamber
101 are heated to 50~80 DEG C, accelerate alpha tin acid to be converted into the β-stannic acid easily precipitated, and β-stannic acid is big with respect to alpha tin granulates, filter cake
Layer space is relatively large, is easy to filtering；Centrifugal driving device drives porous tophan box 102 to rotate and is centrifuged, filtrate stream
To constant temperature distiller 200；It is comprehensive to use vacuum filtration with high speed centrifugation as filter type, accelerate stannic acid precipitation and filtrate point
From；
When the ageing liquid level of filter 100 is relatively low, closes valve 405 and open valve 404, pass through the suction filtration of pipeline 404；Work as liquid
When face is higher than the pipeline at 405 valves, valve 404 and valve 405 are opened so that filtrate is flowed out from 405 pipelines, from 404 pipelines
Extract out；Stannic acid precipitation is taken out by upper end cover mouthful and screen pack 103, and filtrate is flowed into lower constant temperature distiller 200；
（3）Filtrate decompression is distilled
Filtrate is in constant temperature distiller 200, and control vapo(u)rizing temperature passes through taking out for vavuum pump 401 and pipeline at 80~100 DEG C
Depress vacuum distillation, condensing crystallizing component is gathered in crystallization discharge valve by the inclined-plane of bottom under gravity, gas in
The condensation of collecting tank 300 is cooled down to reclaim；
Filtrate is in constant temperature distiller 200, by vacuum distillation, and constant temperature heating device 202 is water bath thermostat, control
Vapo(u)rizing temperature is at 80~100 DEG C, it is to avoid nitric acid is acutely decomposed and nitrate is decomposed, and filtrate concentrates in constant temperature distiller 200, and
Vacuum distillation is carried out by the pressure of taking out at pipeline 406, distillate cools down absorption in the collecting pipe of rear end, and condensing crystallizing component exists
Crystallization discharge valve 203 is gathered in by the inclined-plane of bottom under Action of Gravity Field, accumulation is easily separated to a certain amount of rear taking-up.
Embodiment 2
The main technical schemes of the present embodiment are substantially the same manner as Example 1, the feature not laid down a definition in the present embodiment, adopt
With the explanation in embodiment 1, no longer repeated herein.A kind of classified reclaiming method of tin removal waste liquor of the present embodiment is as follows：
Valve 402 is opened, tin-stripping wastewater is flowed into 2L/min speed toward pipeline（Total Theil indices 120.5g/L, Cu2+Concentration
For 18.4g/L）, valve 403 is opened after 3 minutes simultaneously, the PMA weak solutions using 15mL/min speed implantation concentration as 1%（Wadding
Solidifying agent）, after after liquid level covering ageing filter bottom end formation sealing liquid level after a period of time, open in ageing filter 100
Heater 105, sets 50 DEG C of constant temperature, stands after 1h；Close valve 405 and open valve 404, open vacuum mode, start simultaneously
Motor 106 carries out centrifugal mixer 1000r/min, while constant temperature distiller 200 is opened, the temperature in control constant temperature distiller 200
For 80 DEG C, the cooling circulating water system of cooling device 301 is opened, nitric acid is collected in fluid reservoir 302.
When being aged the liquid level therein of filter chamber 101 more than ageing 101 capacity half of filter chamber, liquid flowing valve 402 is closed
With sample introduction valve 403, when the lower end liquid level of filter chamber 101 to be aged is less than porous 102 bottom of tophan box, closes valve 404 and beat
Valve opening door 405, opens capping 107, takes out filter bag 103, you can isolate stannic acid.Pass through the glass on constant temperature distiller 300
Liquid level and crystalline solid situation in window observation vacuum distillation, stop heating and close vacuum system, nitre is isolated by valve
Hydrochlorate product.
Embodiment 3
The main technical schemes of the present embodiment are essentially identical with embodiment 1 or 2, the spy not laid down a definition in the present embodiment
Levy, using the explanation in embodiment 1 or 2, no longer repeated herein.A kind of classification recovery side of the tin removal waste liquor of the present embodiment
Method is as follows：
Valve 402 is opened, tin-stripping wastewater is flowed into 5L/min speed toward pipeline（Total Theil indices 94.6g/L, Cu2+Concentration
For 15.7g/L）, valve 403 is opened after 5 minutes simultaneously, the cation polypropylene acyl using 5mL/min speed implantation concentration as 5%
Amine weak solution, forms after sealing liquid level after liquid level covering ageing filter 100 bottom after a period of time, opens ageing filter
Heater 105 in 100, sets 80 DEG C of constant temperature, stands after 1h；Close valve 405 and open valve 404, open vacuum mode, together
Shi Kaidong motors 106 carry out centrifugal mixer 700r/min, while constant temperature distiller 300 is opened, in control constant temperature distiller 300
Temperature is 100 DEG C, opens the cooling circulating water system of cooling device 301, collects nitric acid in fluid reservoir 302.
When being aged the liquid level therein of filter chamber 101 more than ageing filtering 101 half of chamber vol, close feed liquor 402 and enter
Sample valve 403, when the lower end liquid level of filter chamber 101 to be aged is less than porous 102 bottom of tophan box, closes valve 404 and opens valve
Door 405, opens capping 107, takes out filter bag 103, you can isolate stannic acid.Seen by the windowpane on constant temperature distiller 300
The liquid level and crystalline solid situation in vacuum distillation are examined, stops heating and closes vacuum system, nitrate is isolated by valve
Product.
Embodiment 4
The main technical schemes of the present embodiment and embodiment 1 or 2 or 3 are essentially identical, do not lay down a definition in the present embodiment
Feature, using the explanation in embodiment 1 or 2 or 3, is no longer repeated herein.Wherein, step（2）In, concentration is 3% flocculation
Agent is as settling agent, and settling agent is with tin removal waste liquor flows per unit time 1:500, settling agent concentration is 30ppm after mixing；Ageing
Filter chamber is heated to 65 DEG C；Step（3）In, control vapo(u)rizing temperature is at 90 DEG C.
Embodiment 5
The main technical schemes of the present embodiment and embodiment 1 or 2 or 3 are essentially identical, do not lay down a definition in the present embodiment
Feature, using the explanation in embodiment 1 or 2 or 3, is no longer repeated herein.Wherein, step（2）In, settling agent gives up with moving back tin
Liquid flows per unit time is 1:1000.
Embodiment 6
The main technical schemes of the present embodiment and embodiment 1 or 2 or 3 are essentially identical, do not lay down a definition in the present embodiment
Feature, using the explanation in embodiment 1 or 2 or 3, is no longer repeated herein.Wherein, step（2）In, settling agent gives up with moving back tin
Liquid flows per unit time is 1:100.
Embodiment 7
The main technical schemes of the present embodiment and embodiment 1 or 2 or 3 are essentially identical, do not lay down a definition in the present embodiment
Feature, using the explanation in embodiment 1 or 2 or 3, is no longer repeated herein.Wherein, step（2）In, settling agent gives up with moving back tin
Settling agent concentration is 10ppm after liquid mixing.
Embodiment 8
The main technical schemes of the present embodiment and embodiment 1 or 2 or 3 are essentially identical, do not lay down a definition in the present embodiment
Feature, using the explanation in embodiment 1 or 2 or 3, is no longer repeated herein.Wherein, step（2）In, settling agent gives up with moving back tin
Settling agent concentration is 50ppm after liquid mixing.
Embodiment described above only expresses embodiments of the present invention, and it describes more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of classifying and reclaiming system for tin removal waste liquor, it is characterised in that：Include suction filtration system, ageing filter, perseverance
Warm distiller and cooling collecting tank,
The suction filtration system includes vavuum pump and pipeline, and the pipeline is equiped with valve；
The ageing filter is provided with ageing filter chamber, porous tophan box, filter bag, heater and centrifugal driving device, institute
State porous tophan box to be installed in the ageing filter chamber and driven by the centrifugal driving device, the filter bag is arranged at institute
State in porous tophan box, the opening of wastewater feed pipe and settling agent sample feeding pipe is towards inside the filter bag；
The constant temperature distiller is provided with wedged bottom distillery and constant temperature heating device, and the wedged bottom distillery is filtered with the ageing
Room is by pipeline communication, and the inclined-plane bottom of the wedged bottom distillery is provided with crystallization discharge valve；
The cooling collecting tank is provided with fluid reservoir and cooling device, and the cooling device makes distillation for cooling down the fluid reservoir
Gas is condensed, and the fluid reservoir is connected with wedged bottom distillery；
The vavuum pump of the suction filtration system with the fluid reservoir by pipeline communication,
The centrifugal driving device is made up of motor and centrifugation dead axle, and the bottom of the centrifugation dead axle and the porous tophan box is consolidated
Connect, the motor drives the centrifugation fixed-axis rotation.
2. a kind of classifying and reclaiming system for tin removal waste liquor according to claim 1, it is characterised in that：The heater
Be arranged at the bottom of the ageing filter chamber, and the heater be located at the porous tophan box and the ageing filter chamber it
Between.
3. a kind of classifying and reclaiming system for tin removal waste liquor according to claim 1, it is characterised in that：The fluid reservoir
Surge chamber is provided between the vavuum pump.
4. a kind of classifying and reclaiming system for tin removal waste liquor according to claim 1, it is characterised in that：The wedged bottom steams
The bottom surface for evaporating room is set to the inclined-plane that gradient is 30 ~ 60 °.
5. a kind of classifying and reclaiming system for tin removal waste liquor according to claim 1, it is characterised in that：It is described to be aged
Filter chamber, porous tophan box and filter bag are made up of one or both of polytetrafluoroethylene (PTFE), polyphenylene sulfide.
6. a kind of tin removal waste liquor classified reclaiming method, it is characterised in that：Moved back using being used for described in claim 1 ~ 5 any one
The classifying and reclaiming system of tin waste liquid, includes following steps：
（1）Waste liquid is delivered
By in tin removal waste liquor injection ageing filter；
（2）Flocculation centrifugal filtration
Concentration is added in 1%~5% flocculant as settling agent, settling agent is with tin removal waste liquor flows per unit time 1:1000~
1:100 so that flocculant absorption stannic acid colloid sedimentation；Ageing filter chamber is heated to 50~80 DEG C, and centrifugal driving device driving is more
Hole tophan box is rotated and is centrifuged, and filtrate flows to constant temperature distiller；
（3）Filtrate decompression is distilled
Filtrate is in constant temperature distiller, and control vapo(u)rizing temperature is steamed at 80~100 DEG C by the pressure decompression of taking out of vavuum pump and pipeline
Evaporate, condensing crystallizing component is gathered in crystallization discharge valve by the inclined-plane of bottom under gravity, and gas is in cooling collecting tank
Condensation is reclaimed.
7. a kind of classified reclaiming method of tin removal waste liquor according to claim 6, it is characterised in that：Step（2）In help heavy
Agent controls settling agent concentration after mixing to be 10~50ppm with tin removal waste liquor.
8. a kind of classified reclaiming method of tin removal waste liquor according to claim 6 or 7, it is characterised in that：It is aged filter chamber
Heater starting after, constant temperature stand 1h.
9. a kind of classified reclaiming method of tin removal waste liquor according to claim 6 or 7, it is characterised in that：Constant temperature distiller
Constant temperature heating device be water bath thermostat.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445268A (en) * | 2008-12-19 | 2009-06-03 | 兀吉康 | Technique for recovering zinc chloride from waste water in reduction process of isooctyl thioglycolate |
| CN101670229A (en) * | 2009-09-28 | 2010-03-17 | 浙江保圣配料有限公司 | Suction filtration equipment |
| CN205241426U (en) * | 2015-11-05 | 2016-05-18 | 广东工业大学 | A categorised recovery system for moving back tin waste liquid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07272117A (en) * | 1994-03-30 | 1995-10-20 | Kubota Corp | Extracting and filtering device for automatic vending machine |
| US7244357B2 (en) * | 1999-05-25 | 2007-07-17 | Miox Corporation | Pumps for filtration systems |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445268A (en) * | 2008-12-19 | 2009-06-03 | 兀吉康 | Technique for recovering zinc chloride from waste water in reduction process of isooctyl thioglycolate |
| CN101670229A (en) * | 2009-09-28 | 2010-03-17 | 浙江保圣配料有限公司 | Suction filtration equipment |
| CN205241426U (en) * | 2015-11-05 | 2016-05-18 | 广东工业大学 | A categorised recovery system for moving back tin waste liquid |
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