CN206279030U - Evaporated waste ammonia liquid processing equipment - Google Patents
Evaporated waste ammonia liquid processing equipment Download PDFInfo
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- CN206279030U CN206279030U CN201620946158.2U CN201620946158U CN206279030U CN 206279030 U CN206279030 U CN 206279030U CN 201620946158 U CN201620946158 U CN 201620946158U CN 206279030 U CN206279030 U CN 206279030U
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- import
- liquid
- waste ammonia
- evaporated waste
- outlet
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Abstract
The evaporated waste ammonia liquid that the purpose of this utility model is produced when producing soda ash for prior art contains substantial amounts of sodium chloride and calcium chloride,The deficiency polluted to environment,A kind of evaporated waste ammonia liquid processing equipment is provided,Including collecting pit,Concentration basin,Crystallization apparatus and forward osmosis membrane processing unit,Described forward osmosis membrane processing unit includes forward osmosis membrane component and draws liquid pool,Evaporated waste ammonia liquid is collected by collecting pit,The liquid outlet three of drawing for drawing liquid pool is connected with the import two of forward osmosis membrane component opposite side,The concentrated solution outlet of concentration basin connects the import of crystallizer,Using the processing equipment of this structure,Evaporated waste ammonia liquid after concentration enters the sodium chloride and calcium chloride that enrichment pond and crystallizing evaporator are extracted in evaporated waste ammonia liquid concentrate,The saturation refined brine of opposite side is continuing with as the raw material of soda manufacture,So as to the cycling and reutilization of evaporated waste ammonia liquid can be realized.
Description
Technical field
The utility model belongs to liquid waste disposal technique field, more particularly to a kind of processing system of evaporated waste ammonia liquid.
Background technology
When with ammonia-soda process soda ash, it is an important procedure to steam, inhale ammonia.Using salt and lime stone as main life
Raw material is produced, using ammonia as middle auxiliary material.In this process, crude salt obtains refined brine, refined salt through water dissolves and after refining
Water absorbing ammonia generates ammonial brine, and ammonial brine absorbing carbon dioxide forms sodium acid carbonate suspension, and suspension is through separation of solid and liquid, filter cake
Final products soda ash is obtained after calcining, the carbon dioxide produced in calcination process is continued cycling through and used, sodium acid carbonate suspends
Liquid reacts in ammonia still through the sodium acid carbonate liquid that separation of solid and liquid is obtained with milk of lime, obtains rich in sodium chloride, calcium chloride, lacks
The evaporated waste ammonia liquid and ammonia of the calcium sulfate and magnesium salts of amount etc., the ammonia for steaming are continued cycling through and used, and evaporated waste ammonia liquid is then drained into surrounding
In environment.In addition in ammonia still process, in order to ensure the rate of recovery of ammonia, the content of ammonia in evaporated waste ammonia liquid is reduced, in ammonia still process process
It is middle to add excessive milk of lime, therefore, 500 ~ 800mg/L of CaOH2 can be typically contained in evaporated waste ammonia liquid, precipitated by clarification
Afterwards, the main component of evaporated waste ammonia liquid is sodium chloride and calcium chloride, and wherein sodium chloride content is generally 30 ~ 60g/L, and calcium chloride is
90 ~ 130g/L, ammonia is 50 ~ 70mg/L.PH value is between 11 ~ 11.5.Therefore, pollution of the evaporated waste ammonia liquid to environment be it is huge,
Evaporated waste ammonia liquid must be processed.
Utility model content
The purpose of this utility model is directed to the evaporated waste ammonia liquid produced during prior art ammonia-soda process soda ash and contains greatly
The sodium chloride and calcium chloride of amount, the deficiency polluted to environment, there is provided a kind of evaporated waste ammonia liquid processing equipment.
The purpose of this utility model is achieved by the following technical solution：
A kind of evaporated waste ammonia liquid processing equipment, including collecting pit, concentration basin, crystallization apparatus and forward osmosis membrane processing unit, institute
The forward osmosis membrane processing unit stated is including forward osmosis membrane component and draws liquid pool, and evaporated waste ammonia liquid is collected by collecting pit, collecting pit
Supernatant outlet is connected with the import of concentration basin, the supernatant outlet of concentration basin and the phase of import one of forward osmosis membrane component side
Connection, the outlet one of forward osmosis membrane component side is connected with the concentrate import of concentration basin, the opposite side of forward osmosis membrane component
Outlet two be connected with the import three for drawing liquid pool, that draws liquid pool draws liquid outlet three with forward osmosis membrane component opposite side
Import two is connected, and the concentrated solution outlet of concentration basin connects the import of crystallizer；
Sedimentation basin and filter press, the sediment outlet of sedimentation basin and the sediment inlet communication of filter press are additionally provided with, by precipitating
The supernatant outlet in pond is connected with the supernatant import of concentration basin, so as to realize the connection of collecting pit and concentration basin, filter press
It is provided with filter quarrel outlet；
Filter is provided between sedimentation basin and concentration basin, the supernatant outlet of sedimentation basin is by the filter and concentration
The import of liquid supernatant is connected；
The purified liquor outlet that filter press goes out is connected with the clear liquid import of sedimentation basin；
Enrichment pond is provided between concentration basin and crystallizer, import and the concentrated solution outlet of concentration basin by enrichment pond, if
Two crystallizers, crystallizer one and crystallizer two are put, by the import of the outlet crystallizer two of crystallizer one；
Refined salt pond is additionally provided with, salt solution is provided to liquid pool is drawn from refined salt pond；
Between the import one of concentration basin and forward osmosis membrane component set circulating pump one, forward osmosis membrane component with draw liquid pool
Between set circulating pump two；
Also include chemicals dosing plant, from chemicals dosing plant to adding liquid in sedimentation basin, the easy fouling in removal evaporated waste ammonia liquid from
Son.
Using the evaporated waste ammonia liquid processing equipment of the utility model structure, can be using the essence of one of the raw material of soda manufacture saturation
Salt solution draws liquid as forward osmosis membrane, and the water in evaporated waste ammonia liquid is drawn into film by the concentration difference formed using forward osmosis membrane both sides
Opposite side saturation refined brine in, evaporated waste ammonia liquid after concentration enters enrichment pond and crystallizing evaporator extracts evaporated waste ammonia liquid concentration
Sodium chloride and calcium chloride in liquid, the saturation refined brine of opposite side are continuing with as the raw material of soda manufacture, so as to can realize
The cycling and reutilization of evaporated waste ammonia liquid.
Brief description of the drawings：
Fig. 1 is the utility model evaporated waste ammonia liquid processing equipment example structure schematic diagram.
Reference
1- collecting pits；2- sedimentation basins；3- filters；4- concentration basins；5- circulating pumps one；6- forward osmosis membrane components；7- is circulated
Pump two；8- draws liquid pool；9- refined salt pond；10- enrichments pond；11- crystallizers one；13- crystallizers two；14- filter presses；15- adds
Medicine device.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
As shown in Figure 1, system is preferably as follows to process evaporated waste ammonia liquid：It includes collecting pit 1, sedimentation basin 2, filter press
14th, concentration basin 4, forward osmosis membrane processing unit and crystallization apparatus, evaporated waste ammonia liquid is collected by collecting pit 1, to the mistake in alkali producing process
The milk of lime that amount is added carries out sedimentation clarification and obtains supernatant one and sediment, and the supernatant outlet of collecting pit 1 is upper with sedimentation basin 2
Clear liquid import is connected, and the sediment of sedimentation basin 2 exports the sediment inlet communication with filter press 14, the supernatant outlet of sedimentation basin 2
It is connected with the supernatant import of concentration basin 4, the supernatant outlet of concentration basin 4 is by circulating pump 1 and forward osmosis membrane component 6 one
The import of side is connected, and the outlet of the side of forward osmosis membrane component 6 is connected with the concentrate import of concentration basin 4, forward osmosis membrane group
The liquid outlet of drawing of the opposite side of part 6 is connected with the import for drawing liquid pool 8, and that draws liquid draws liquid outlet by circulating pump two
7 are connected with the import of the opposite side of forward osmosis membrane component 6.The connection crystallization apparatus of concentrated solution outlet two of concentration basin 4.
In preferred scheme, chemicals dosing plant 12 can be set, by the entrance of the outlet sedimentation basin 2 of chemicals dosing plant 15；
Filter 3 can be set between sedimentation basin 2 and concentration basin 4, sedimentation basin 2 and concentration basin 4 are connected by filter 3；Can also be by enrichment
Pond 10 connects crystallizer.In order to sodium chloride and calcium chloride are efficiently separated, sodium chloride and calcium chloride crystals are obtained, two-stage can be used
Crystallization mode is crystallized, and the product sodium chloride of the crystallization of one-level crystallizing evaporator one is returned in refined salt pond 9,.Dual evaporation knot
Brilliant device two crystallizes out product calcium chloride, and liquid pool 8 is drawn by the connection of refined salt pond 9, and the refined brine for drawing the discharge of liquid pool 8 is used for soda ash
Raw materials for production.
Evaporated waste ammonia liquid can be processed using following flow using this equipment：Evaporated waste ammonia liquid pretreatment obtains supernatant
Liquid --- supernatant obtains concentrate through positive osmosis concentration --- crystallization obtains crystal.In above-mentioned flow, evaporated waste ammonia liquid is through pre-
The milk of lime that will excessively be added in ammonia-preparing process after treatment carries out natural subsidence clarification and obtains supernatant, is added in supernatant
Medicament, removes easy scale-forming ion and obtains supernatant and sediment after precipitation, and press filtration treatment is carried out to sediment, obtains slag body and clear
Liquid, slag body discharge, the clear liquid for obtaining is entered into and processed in forward osmosis membrane concentration device, obtains concentrate, is obtained
Concentrate is crystallized to obtain crystal, because main being rich in has sodium chloride and calcium chloride in this evaporated waste ammonia liquid, therefore uses secondary crystallization
Technique is evaporated crystallization, and first crystallization obtains sodium chloride, and crystallization afterwards obtains calcium chloride.For using water wisely, sediment through press filtration at
The clear liquid that reason is obtained can mix with the supernatant obtained through precipitation.In order to obtain more preferable treatment effect, can be to through precipitation
The supernatant for obtaining carries out filtration treatment, is re-fed into being carried out in forward osmosis membrane processing unit after filtering insoluble solids thing therein
Concentration, the precision of filtering depending in forward osmosis membrane processing unit forward osmosis membrane component 6 filter ability depending on, typically to filter
More than the solids of 200 micro- industry.In order to reduce the volume of concentrate, obtain just infiltration and process the concentrate for obtaining by concentration basin 4
In further entering back into crystallization apparatus after concentration.Can be using the method for gravity concentration, floatation thickening and centrifugal concentrating to dense
Contracting liquid carries out concentration.In order to eliminate the supernatant in supernatant add medicament precipitation obtain sediment and supernatant-.
Claims (8)
1. a kind of evaporated waste ammonia liquid processing equipment, it is characterised in that including collecting pit（1）, concentration basin（4）, crystallization apparatus and just oozing
Permeable membrane processing unit（600）, described forward osmosis membrane processing unit（600）Including forward osmosis membrane component（6）With draw liquid pool
（8）, by collecting pit（1）Collect evaporated waste ammonia liquid, the supernatant outlet and concentration basin of collecting pit（4）Import be connected, concentration basin
（4）Supernatant outlet（401）With the import one of forward osmosis membrane component side（602）It is connected, forward osmosis membrane component（6）Side
Outlet one（601）With the concentrate import of concentration basin（402）It is connected, the outlet two of the opposite side of forward osmosis membrane component
（603）With draw liquid pool（8）Import three（801）It is connected, draws liquid pool（8）Draw liquid outlet three（803）With positive infiltration
The import two of membrane module opposite side（604）It is connected, concentration basin（4）Concentrated solution outlet（403）Connect the import of crystallizer.
2. a kind of evaporated waste ammonia liquid processing equipment as claimed in claim 1, it is characterised in that be additionally provided with sedimentation basin（2）And pressure
Filter（14）, the sediment of sedimentation basin exports the sediment inlet communication with filter press, by the supernatant outlet and concentration basin of sedimentation basin
Supernatant import be connected, so as to realize the connection of collecting pit and concentration basin, filter press is provided with filter quarrel outlet（1401）.
3. a kind of evaporated waste ammonia liquid processing equipment as claimed in claim 2, it is characterised in that set between sedimentation basin and concentration basin
The supernatant outlet for having filter, sedimentation basin is connected by the filter with the import of concentrate supernatant.
4. as claimed in claim 2 or claim 3 a kind of evaporated waste ammonia liquid processing equipment, it is characterised in that filter press（14）The clear liquid for going out
Outlet（1401）With sedimentation basin（2）Clear liquid import be connected.
5. a kind of evaporated waste ammonia liquid processing equipment as described in one of claim 1-3 items, it is characterised in that in concentration basin and knot
Enrichment pond is provided between brilliant device（10）, by import and the concentrated solution outlet of concentration basin in enrichment pond, two crystallizers, crystallization are set
Device one and crystallizer two, by the import of the outlet crystallizer two of crystallizer one.
6. a kind of evaporated waste ammonia liquid processing equipment as claimed in claim 1, it is characterised in that be additionally provided with refined salt pond（9）, by
Refined salt pond provides salt solution to liquid pool is drawn.
7. a kind of evaporated waste ammonia liquid processing equipment as claimed in claim 1 or 2, it is characterised in that in concentration basin and forward osmosis membrane
The import one of component（602）Between circulating pump one is set, circulating pump two is set in forward osmosis membrane component and between drawing liquid pool.
8. a kind of evaporated waste ammonia liquid processing equipment as claimed in claim 2, it is characterised in that also including chemicals dosing plant（15）, by
Chemicals dosing plant removes the easy scale-forming ion in evaporated waste ammonia liquid to liquid is added in sedimentation basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620946158.2U CN206279030U (en) | 2016-08-26 | 2016-08-26 | Evaporated waste ammonia liquid processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620946158.2U CN206279030U (en) | 2016-08-26 | 2016-08-26 | Evaporated waste ammonia liquid processing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206279030U true CN206279030U (en) | 2017-06-27 |
Family
ID=59084622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620946158.2U Expired - Fee Related CN206279030U (en) | 2016-08-26 | 2016-08-26 | Evaporated waste ammonia liquid processing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206279030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570186A (en) * | 2018-10-24 | 2019-04-05 | 湖北云应矿业技术开发有限公司 | A kind of reuse method of soda-manufacturing waste residue liquid and system using this method |
-
2016
- 2016-08-26 CN CN201620946158.2U patent/CN206279030U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570186A (en) * | 2018-10-24 | 2019-04-05 | 湖北云应矿业技术开发有限公司 | A kind of reuse method of soda-manufacturing waste residue liquid and system using this method |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170627 Termination date: 20180826 |