CN110002472A - The industrial method of by-product sodium sulphate continuous production sodium hydrogensulfite - Google Patents
The industrial method of by-product sodium sulphate continuous production sodium hydrogensulfite Download PDFInfo
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- CN110002472A CN110002472A CN201910129423.6A CN201910129423A CN110002472A CN 110002472 A CN110002472 A CN 110002472A CN 201910129423 A CN201910129423 A CN 201910129423A CN 110002472 A CN110002472 A CN 110002472A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/14—Preparation of sulfites
- C01D5/145—Pyrosulfites or metabisulfites
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
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Abstract
The invention discloses a kind of industrial methods using by-product sodium sulphate continuous production sodium hydrogensulfite, comprising: the first step, by-product sodium sulphate and Ca (OH)2Or in calcium oxide investment choline pond, stirring generates ashing suspension；Second step, ashing suspension and SO2Gas reacts in three-level absorbing reaction system, generates the mixing suspension of calcium sulfate and sodium hydrogensulfite；Third step, the mixing suspension obtained to second step are separated by solid-liquid separation, acquired solution, that is, solution of sodium bisulfite.The present invention uses the form of three-level absorbing reaction, carrys out the proportion of the various raw materials of dynamic micro-adjustments, accurately to be controlled synthesis process, to realize the industrialization of by-product sodium sulphate continuous production sodium hydrogensulfite.
Description
Technical field
The present invention relates to a kind of industrial methods of by-product sodium sulphate continuous production sodium hydrogensulfite.
Background technique
Sodium sulphate (Na2SO4) it is the salt that sulfate radical and sodium ion chemical combination generate, sodium sulphate is dissolved in water and during its aqueous solution is in
Property, it is dissolved in glycerol and does not dissolve in ethyl alcohol.Sodium sulphate containing the crystallization water is generally sal glauberi also known as saltcake, and chemical property is steady
It is fixed, do not dissolve in strong acid.It is now special to produce the enterprise of sodium sulphate with sulfuric acid and alkali neutralization reaction almost without usually from sulfur-bearing
It is refined in the waste water of sour sodium, and through the sodium sulphate for being recrystallized to give high-purity repeatedly, with the development of economy and people couple
The requirement of environment is higher and higher, the Waste Sulfuric Acids of some chemical companies cannot direct outlet, generally by alkali neutralization processing, finally all
It will form sodium sulphate.There are also the productions of some fine chemical products, itself also there is a large amount of sodium sulfate wastewaters of neutralization reaction bring.
The source of present sodium sulphate is more and more, and sodium sulphate causes disaster in society, or even becomes new waste, to enterprise and national band
Worry is carried out.Thus how these sodium sulphate circulation comprehensives to be utilized, is great meaning for chemical industry and society.
The sodium sulphate of industrial by-product substantially has following whereabouts at present, first is that coal, which is added, is sintered into vulcanized sodium, vulcanizes
Sodium is used as the production of other chemical products；It is recrystallized repeatedly second is that being dissolved, re-dry is dehydrated into anhydrous sodium sulfate as drying
Machine or reagent；Third is that be stored in it is to be processed in warehouse, conscience enterprise can to qualified company when dangerous waste handle, it is conscienceless
Enterprise just finds a chance to exhaust steathily.Applicant company can generate a large amount of sodium sulphate, by-product sulphur when producing veratraldehyde and veratrole
Sour sodium is cheap.In addition, the price of raw material such as sodium hydroxide, sodium carbonate needed for applicant company's production sodium hydrogensulfite occupies
It is high not under.Therefore, applicant considers again to use the sodium ion in by-product sodium sulphate in sodium hydrogensulfite, in this way can be big
The big production cost for reducing sodium hydrogensulfite, while by-product sodium sulphate can be also consumed, turn waste into wealth.
Summary of the invention
The object of the present invention is to provide a kind of industrial method of by-product sodium sulphate continuous production sodium hydrogensulfite, Ji Ke great
The big production cost for reducing sodium hydrogensulfite, while can also consume by-product sodium sulphate.
The industrial method of by-product sodium sulphate continuous production sodium hydrogensulfite provided by the invention, comprising:
The first step, choline discharge water in pond, heat water to 45 DEG C ~ 55 DEG C with steam, and by-product sodium sulphate is put into choline pond and is stirred
It mixes until by-product sodium sulphate is completely dissolved, later by Ca (OH)2Or in calcium oxide investment choline pond, stirring generates ashing and suspends
Liquid；Wherein, by-product sodium sulphate and Ca (OH)2Or the molar ratio of calcium oxide is 1:1.2；
Second step, ashing suspension and SO2Gas reacts in three-level absorbing reaction system, generates calcium sulfate and sodium hydrogensulfite
Mixing suspension；
The three-level absorbing reaction system includes primary cycle kettle and there are the level-ones of circulation canal between primary cycle kettle
Inclined plate absorption tower, secondary cycle kettle and there are the second level inclined plate absorption tower of circulation canal, three-levels to follow between secondary cycle kettle
Ring kettle and there are the three-level inclined plate absorption towers of circulation canal between three-level recirculating still；Primary cycle kettle, secondary cycle kettle, three
Grade recirculating still is sequentially connected to, and is connected to choline pond；Level-one inclined plate absorption tower, second level inclined plate absorption tower, three-level inclined plate absorb
Tower is sequentially connected to；
Level-one inclined plate absorption tower, second level inclined plate absorption tower, the structure on three-level inclined plate absorption tower are equal are as follows:
Including tower main body, tower main body wall top is equipped with inlet, and tower main body wall lower part is equipped with air inlet, and tower main body top is set
There is gas outlet；Tower main body internal upper part is equipped with spray equipment, several cards is equipped with below spray equipment, bottom is equipped with one in tower main body
Inclined plate；Inlet connects spray equipment by pipeline, and air inlet is located at inclined plate upper end, at the inclined plate lower end in tower main body wall
It is additionally provided with refluxing opening, inlet passes through pipeline with refluxing opening and is connected to corresponding recirculating still；
Reaction process in three-level absorbing reaction system is as follows:
Ashing suspension lasts are pumped into primary cycle kettle in choline pond, meanwhile, it is passed through by the air inlet on level-one inclined plate absorption tower
SO2Gas makes SO using air extractor2Gas is successively passed through level-one inclined plate absorption tower, second level inclined plate absorption tower, the suction of three-level inclined plate
Receive tower；Recycle ashing suspension between primary cycle kettle and level-one inclined plate absorption tower using circulating pump, and in level-one inclined plate
In absorption tower and SO2Reaction；In first order absorption reaction process, controlling pH of suspension in primary cycle kettle is 10 ~ 11, controls level-one
Inclined plate absorption tower interior reaction temperature is 40 DEG C ~ 60 DEG C；
While first order absorption reaction, the suspension lasts for being 10 ~ 11 of pH in primary cycle kettle are pumped into secondary cycle kettle, benefit
Recycle ashing suspension between secondary cycle kettle and second level inclined plate absorption tower with circulating pump, and in second level inclined plate absorption tower
With SO2Reaction；During second level absorbing reaction, controlling pH of suspension in secondary cycle kettle is 6.5 ~ 7.5, and control second level inclined plate is inhaled
Receiving tower interior reaction temperature is 40 DEG C ~ 60 DEG C；
Meanwhile the suspension lasts for being 6.5 ~ 7.5 of pH in secondary cycle kettle are pumped into three-level recirculating still, make ashing using circulating pump
Suspension recycles between three-level recirculating still and three-level inclined plate absorption tower, and in three-level inclined plate absorption tower and SO2Reaction；Three-level
During absorbing reaction, controlling pH of suspension in three-level recirculating still is 3 ~ 3.5, and control three-level inclined plate absorption tower interior reaction temperature is
40℃~60℃；
In entire reaction process, first order absorption reaction, second level absorbing reaction, three-level absorbing reaction start simultaneously, the reaction time
1.5h~2h；
Third step, the mixing suspension obtained to second step are separated by solid-liquid separation, acquired solution, that is, solution of sodium bisulfite.
The present invention also provides a kind of three-level absorbing reaction systems, for by-product sodium sulphate continuous production sodium hydrogensulfite
Industrialization, the three-level absorbing reaction system includes primary cycle kettle and there are the one of circulation canal between primary cycle kettle
Grade inclined plate absorption tower, secondary cycle kettle and there are the second level inclined plate absorption towers of circulation canal, three-level between secondary cycle kettle
Recirculating still and there are the three-level inclined plate absorption towers of circulation canal between three-level recirculating still；Primary cycle kettle, secondary cycle kettle,
Three-level recirculating still is sequentially connected to, and is connected to choline pond；Level-one inclined plate absorption tower, second level inclined plate absorption tower, three-level inclined plate are inhaled
Tower is received sequentially to be connected to；
Level-one inclined plate absorption tower, second level inclined plate absorption tower, the structure on three-level inclined plate absorption tower are equal are as follows:
Including tower main body, tower main body wall top is equipped with inlet, and tower main body wall lower part is equipped with air inlet, and tower main body top is set
There is gas outlet；Tower main body internal upper part is equipped with spray equipment, several cards is equipped with below spray equipment, bottom is equipped with one in tower main body
Inclined plate；Inlet connects spray equipment by pipeline, and air inlet is located at inclined plate upper end, at the inclined plate lower end in tower main body wall
It is additionally provided with refluxing opening, inlet passes through pipeline with refluxing opening and is connected to corresponding recirculating still.
The invention has the advantages that and the utility model has the advantages that
(1) reaction mechanism that the present invention is based on has pertinent literature report, but its realization of industrialization is not easy at present.Example
Such as, it needs accurately to control the proportion of various raw materials in industrialization, sodium sulphate excessively will lead to sulphur in sodium hydrogensulfite product
Acid ion is exceeded, and sulfate ion is exceeded to directly result in scrap of the product, and calcium bisulfite excessively will lead to sulfur dioxide
Exorbitant expenditure and influence cost, the control of process is difficult.In fact, enterprise not yet domestic at present realizes that by-product sodium sulphate is raw
Produce the industrialization of sodium hydrogensulfite.
(2) form that the present invention is absorbed using three-level, carrys out the proportion of the various raw materials of dynamic micro-adjustments, realizes the accurate control of process
System.
(3) a large amount of solid can be generated with the progress of production sodium hydrogensulfite, in absorption tower, in general, these are new
The solid of generation will lead to blocking, and blocking will affect reaction efficiency, and the present invention is avoided using the inclined plate absorption tower of autonomous Design
Blocking, so that it is guaranteed that reaction efficiency.
Detailed description of the invention
Fig. 1 is the process flow diagram in embodiment；
Fig. 2 is the structural schematic diagram of three-level absorbing reaction system in embodiment；
Fig. 3 is the structural schematic diagram on embodiment middle swash plate absorption tower.
In figure:
100- inclined plate absorption tower, 101- inlet, 102- air inlet, 103- refluxing opening, the gas outlet 104-, 105- spray equipment,
106- card, 107- inclined plate；
100a- level-one inclined plate absorption tower, 100b- second level inclined plate absorption tower, 100c- three-level inclined plate absorption tower；
200- recirculating still, 200a- primary cycle kettle, 200b- secondary cycle kettle, 200c- three-level recirculating still, 201a, 201b,
201c- circulating pump.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The main thought of present invention process route are as follows: molten using sulfur dioxide and calcium hydroxide reaction generation calcium bisulfite
Liquid reacts calcium ion and sodium sulphate in calcium bisulfite and generates sediment calcium sulfate, sediment filtered out, filtrate is
It is solution of sodium bisulfite, filter residue is calcium sulfate or calcium sulfite solid.
The reaction mechanism is as follows for present invention process route:
SO2For colourless sour gas excitatory, generation sulfurous acid soluble easily in water, sulfurous acid is medium strong acid.SO2It is dissolved in stone
Buck generates CaSO3, excessive SO2With CaSO3Reaction generates Ca (HSO3)2, calcium bisulfite Ca (HSO3)2Solubility it is obvious
Higher than calcium sulfite CaSO3.To Ca (HSO3)2By-product sodium sulphate is added in solution and generates calcium sulfate and sodium hydrogensulfite, separates sulphur
Sour calcium and sodium hydrogensulfite, obtain sodium hydrogensulfite.
Related reaction process is as follows:
Ca(OH)2+SO2→CaSO3↓+H2O
CaSO3+ H2O +SO2→Ca(HSO3)2
Ca(HSO3)2+Na2SO4+H2O→CaSO4・2H2O↓+2NaHSO3
The present invention is based on above-mentioned reaction mechanisms, realize the industrialization of by-product sodium sulphate production sodium hydrogensulfite, process flow ginseng
See Fig. 1, comprising:
(1) ashing suspension is prepared.
It first discharges water in choline pond, and with being steam heated to 45 DEG C ~ 55 DEG C, by-product sodium sulphate is put into warm water and stirred, directly
It is completely dissolved to by-product sodium sulphate.Again by technical grade Ca (OH)2It puts into choline pond, stirring, which generates, contains sodium sulphate and hydroxide
The ashing suspension of calcium.By-product sodium sulphate and Ca (OH)2The molar ratio of dispensing is 1:1.2.Ashing suspension is pumped into recirculating still
In it is stand-by.In the present embodiment, recirculating still is a kind of jade glass reaction kettle；Ca(OH)2Calcium oxide replacement can be used.
(2) it reacts.
Ashing suspension and SO in the present invention2Gas is reacted in three-level absorbing reaction system, generate calcium sulfate and
The mixing suspension of sodium hydrogensulfite.It is shown in Figure 2, the three-level absorbing reaction system include primary cycle kettle 200a and
There are level-one inclined plate absorption tower 100a, secondary cycle kettle 200b and and the second levels of circulation canal between primary cycle kettle 200a
Between recirculating still 200b there are second level inclined plate absorption tower 100b, the three-level recirculating still 200c of circulation canal and with three-level recirculating still
There are the three-level inclined plate absorption tower 100c of circulation canal between 200c；Primary cycle kettle 200a, secondary cycle kettle 200b, three-level are followed
Ring kettle 200c is sequentially connected to, and is connected to choline pond 300；Level-one inclined plate absorption tower 100a, second level inclined plate absorption tower 100b, three
Grade inclined plate absorption tower 100c is sequentially connected to, and the exhaust gas processing device outside the gas outlet connection of three-level inclined plate absorption tower 100c.
Fig. 3 show the structural schematic diagram on inclined plate absorption tower, and inclined plate absorption tower 100 includes tower main body, in tower main body wall
Portion is equipped with inlet 101, and tower main body wall lower part is equipped with air inlet 102, and tower main body top is equipped with gas outlet 104；In tower main body
Top is equipped with spray equipment 105, several cards 106 is equipped with below spray equipment 105, bottom is equipped with an inclined plate 107 in tower main body.
Inlet 101 connects spray equipment 105 by pipeline, and air inlet 102 is located at 107 upper end of inclined plate, oblique in tower main body wall
Refluxing opening 103 is additionally provided at 107 lower end of plate, inlet 101 is connected to corresponding recirculating still 200 by pipeline with refluxing opening 103,
For forming circulation canal.In the present invention, ashing suspension and SO2Gas is reacted in inclined plate absorption tower 100, specific mistake
Journey are as follows: ashing suspension is pumped into inlet 101 from recirculating still, into spray equipment 105, sprays out from spray equipment 105, and suitable
It is secondary to be flowed down by each card 106, it is distributed hole on card 106, for dispersing to the ashing suspension flowed through.Meanwhile
SO2Gas from air inlet 102 enter inclined plate absorption tower 100 in, moved upwards in the draft of aspiration pump, in ascending motion with
Ashing suspension is contacted and is reacted, and reaction product falls on inclined plate 107, and flows down under the effect of gravity, and from refluxing opening 103
Into in recirculating still 200.Unreacted SO2Gas is gone out from the gas outlet 104 on 100 top of inclined plate absorption tower, and from next stage
The air inlet on inclined plate absorption tower enter in the inclined plate absorption tower of next stage, second level suction is carried out in the inclined plate absorption tower of next stage
Receive reaction.
Below in conjunction with the structural schematic diagram of Fig. 2 and Fig. 3, the process flow of three-level absorbing reaction is further described.
Ashing suspension lasts are pumped into primary cycle kettle 200a in choline pond, meanwhile, pass through level-one inclined plate absorption tower 100a
Air inlet 102 be passed through conversion gas or pure SO2Gas, it should be noted that SO in conversion gas2The content of gas is 8% ~ 9%, pure
SO2The purity of gas is 99%.Start air extractor (not drawn in the figure), makes SO2Gas is successively passed through level-one inclined plate absorption tower
100a, second level inclined plate absorption tower 100b, three-level inclined plate absorption tower 100c；Start circulating pump 201a, make ashing suspension by into
Liquid mouth 101 and refluxing opening 103 recycle between primary cycle kettle 200a and level-one inclined plate absorption tower 100a, and inhale in level-one inclined plate
Receive tower 100a in and SO2Reaction.In first order absorption reaction process, controlling pH of suspension in primary cycle kettle 200a is 10 ~ 11, control
Level-one inclined plate processed absorption tower 100a interior reaction temperature is 40 DEG C ~ 60 DEG C.
While first order absorption reaction, the suspension lasts for being 10 ~ 11 of pH in primary cycle kettle 200a are pumped into second level
Recirculating still 200b makes ashing suspension in secondary cycle kettle 200b and second level inclined plate absorption tower under the action of circulating pump 201b
It is recycled between 100b, and in second level inclined plate absorption tower 100b and SO2Reaction.During second level absorbing reaction, control second level is followed
PH of suspension is 6.5 ~ 7.5 in ring kettle 200b, and control second level inclined plate absorption tower 100b interior reaction temperature is 40 DEG C ~ 60 DEG C.
Meanwhile the suspension lasts for being 6.5 ~ 7.5 of pH in secondary cycle kettle 200b are pumped into three-level recirculating still 200c, it is following
Under the action of ring pumps 201c, recycle ashing suspension between three-level recirculating still 200c and three-level inclined plate absorption tower 100c, and
In three-level inclined plate absorption tower 100c and SO2Reaction.During three-level absorbing reaction, suspension in three-level recirculating still 200c is controlled
PH is 3 ~ 3.5, and control three-level inclined plate absorption tower 100c interior reaction temperature is 40 DEG C ~ 60 DEG C.
In entire reaction process, first order absorption reaction, second level absorbing reaction, three-level absorbing reaction start simultaneously, when reaction
Between 1.5h ~ 2h.
(3) separation of calcium sulfate and sodium hydrogensulfite.
By reaction obtain mixing suspension dnockout to solid-liquid separation system is separated by solid-liquid separation while stirring, respectively it is sub-
Sodium bisulfate and byproduct CaSO4.2H2O, solution of sodium bisulfite are finished product of the present invention.Present invention separation of solid and liquid is smooth,
Do not block up filter cloth.Solid-liquid separation system uses plate and frame filter press in the present embodiment.
Through detecting, solution of sodium bisulfite prepared by the method for the present invention, color transparent clear, wherein sulfate ion contains
For amount less than 0.5%, concentration is greater than 12%, and the raw material that can be used as anhydrous sodium sulfite uses.
Above-described embodiment is only one of various embodiments, for those skilled in the art, in above description base
Other various forms of variations or variation can also be made on plinth, and these belong to true spirit and derive other
Variation or variation still fall within the scope of the present invention.
Claims (2)
1. utilizing the industrial method of by-product sodium sulphate continuous production sodium hydrogensulfite, characterized in that comprising steps of
The first step, choline discharge water in pond, heat water to 45 DEG C ~ 55 DEG C with steam, and by-product sodium sulphate is put into choline pond and is stirred
It mixes until by-product sodium sulphate is completely dissolved, later by Ca (OH)2Or in calcium oxide investment choline pond, stirring generates ashing and suspends
Liquid；Wherein, by-product sodium sulphate and Ca (OH)2Or the molar ratio of calcium oxide is 1:1.2；
Second step, ashing suspension and SO2Gas reacts in three-level absorbing reaction system, generates calcium sulfate and sodium hydrogensulfite
Mixing suspension；
The three-level absorbing reaction system includes primary cycle kettle and there are the level-ones of circulation canal between primary cycle kettle
Inclined plate absorption tower, secondary cycle kettle and there are the second level inclined plate absorption tower of circulation canal, three-levels to follow between secondary cycle kettle
Ring kettle and there are the three-level inclined plate absorption towers of circulation canal between three-level recirculating still；Primary cycle kettle, secondary cycle kettle, three
Grade recirculating still is sequentially connected to, and is connected to choline pond；Level-one inclined plate absorption tower, second level inclined plate absorption tower, three-level inclined plate absorb
Tower is sequentially connected to；
Level-one inclined plate absorption tower, second level inclined plate absorption tower, the structure on three-level inclined plate absorption tower are equal are as follows:
Including tower main body, tower main body wall top is equipped with inlet, and tower main body wall lower part is equipped with air inlet, and tower main body top is set
There is gas outlet；Tower main body internal upper part is equipped with spray equipment, several cards is equipped with below spray equipment, bottom is equipped with one in tower main body
Inclined plate；Inlet connects spray equipment by pipeline, and air inlet is located at inclined plate upper end, at the inclined plate lower end in tower main body wall
It is additionally provided with refluxing opening, inlet passes through pipeline with refluxing opening and is connected to corresponding recirculating still；
Reaction process in three-level absorbing reaction system is as follows:
Ashing suspension lasts are pumped into primary cycle kettle in choline pond, meanwhile, it is passed through by the air inlet on level-one inclined plate absorption tower
SO2Gas makes SO using air extractor2Gas is successively passed through level-one inclined plate absorption tower, second level inclined plate absorption tower, the suction of three-level inclined plate
Receive tower；Recycle ashing suspension between primary cycle kettle and level-one inclined plate absorption tower using circulating pump, and in level-one inclined plate
In absorption tower and SO2Reaction；In first order absorption reaction process, controlling pH of suspension in primary cycle kettle is 10 ~ 11, controls level-one
Inclined plate absorption tower interior reaction temperature is 40 DEG C ~ 60 DEG C；
While first order absorption reaction, the suspension lasts for being 10 ~ 11 of pH in primary cycle kettle are pumped into secondary cycle kettle, benefit
Recycle ashing suspension between secondary cycle kettle and second level inclined plate absorption tower with circulating pump, and in second level inclined plate absorption tower
With SO2Reaction；During second level absorbing reaction, controlling pH of suspension in secondary cycle kettle is 6.5 ~ 7.5, and control second level inclined plate is inhaled
Receiving tower interior reaction temperature is 40 DEG C ~ 60 DEG C；
Meanwhile the suspension lasts for being 6.5 ~ 7.5 of pH in secondary cycle kettle are pumped into three-level recirculating still, make ashing using circulating pump
Suspension recycles between three-level recirculating still and three-level inclined plate absorption tower, and in three-level inclined plate absorption tower and SO2Reaction；Three-level
During absorbing reaction, controlling pH of suspension in three-level recirculating still is 3 ~ 3.5, and control three-level inclined plate absorption tower interior reaction temperature is
40℃~60℃；
In entire reaction process, first order absorption reaction, second level absorbing reaction, three-level absorbing reaction start simultaneously, the reaction time
1.5h~2h；
Third step, the mixing suspension obtained to second step are separated by solid-liquid separation, acquired solution, that is, solution of sodium bisulfite.
2. a kind of three-level absorbing reaction system, for the industrialization of by-product sodium sulphate continuous production sodium hydrogensulfite, it is characterized in that:
There are the level-one inclined plate absorption towers of circulation canal, secondary cycle kettle including primary cycle kettle and between primary cycle kettle
And between secondary cycle kettle there are the second level inclined plate absorption tower of circulation canal, three-level recirculating still and with three-level recirculating still it
Between there are the three-level inclined plate absorption towers of circulation canal；Primary cycle kettle, secondary cycle kettle, three-level recirculating still are sequentially connected to, and
It is connected to choline pond；Level-one inclined plate absorption tower, second level inclined plate absorption tower, three-level inclined plate absorption tower are sequentially connected to；
Level-one inclined plate absorption tower, second level inclined plate absorption tower, the structure on three-level inclined plate absorption tower are equal are as follows:
Including tower main body, tower main body wall top is equipped with inlet, and tower main body wall lower part is equipped with air inlet, and tower main body top is set
There is gas outlet；Tower main body internal upper part is equipped with spray equipment, several cards is equipped with below spray equipment, bottom is equipped with one in tower main body
Inclined plate；Inlet connects spray equipment by pipeline, and air inlet is located at inclined plate upper end, at the inclined plate lower end in tower main body wall
It is additionally provided with refluxing opening, inlet passes through pipeline with refluxing opening and is connected to corresponding recirculating still.
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| CN114620881A (en) * | 2022-03-18 | 2022-06-14 | 广东邦普循环科技有限公司 | Recovery method and recovery system of ternary precursor mother liquor |
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|---|---|---|---|---|
| CN114620881A (en) * | 2022-03-18 | 2022-06-14 | 广东邦普循环科技有限公司 | Recovery method and recovery system of ternary precursor mother liquor |
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