CN209507612U - A kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride - Google Patents
A kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride Download PDFInfo
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- CN209507612U CN209507612U CN201920011957.4U CN201920011957U CN209507612U CN 209507612 U CN209507612 U CN 209507612U CN 201920011957 U CN201920011957 U CN 201920011957U CN 209507612 U CN209507612 U CN 209507612U
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Abstract
A kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride, described device includes that sodium bicarbonate device, cold analysis device, salt analysis apparatus and Recycling Mother Solution device is precipitated in the level-one being sequentially communicated, and sodium bicarbonate device is precipitated in second level, the second level is precipitated sodium bicarbonate device one end and is connected to salt analysis apparatus, and the other end is connected to Recycling Mother Solution device.Using the utility model process unit, when energy-saving when cold analysis stage recycling ammonium chloride not only may be implemented, while sodium bicarbonate and ammonium chloride can also be efficiently produced, realize the complete alternation of mother liquor that manufacturing process generates in production technology, simple process, production cost is low.
Description
Technical field
The utility model relates to a kind of chemical production technical fields, produce sodium bicarbonate in particular by double decomposition
(NaHCO3) a kind of process unit, and in particular to circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride.
Background technique
In production process using synthesis of sodium bicarbonate by double decomposition method combined producting ammonium chloride, in the sodium bicarbonate mother solution isolated, contain
There are NaCl, NaHCO3、NH4Cl, wherein sodium bicarbonate is in a saturated state, and in the prior art, which is added
NaCl saltouts, sodium bicarbonate because supersaturation also with ammonium chloride together precipitating, prevent the quality of ammonium chloride product from reaching state
The requirement of family's standard (provides: Na in agricultural ammonium chloride in the agricultural ammonium chloride national standard of 92 years versions+Content≤1.4%)；And
And 25% national standard is also not achieved in the nitrogen content in ammonium chloride product.
And if mother liquor is in line, ammonia nitrogen can seriously pollute rivers water source, in order not to waste discharge, using more
It is to recycle ammonium chloride and salt using evaporation, but the method drawback is more, is on the one hand containing ammonium chloride and sodium chloride total amount in mother liquor
No more than 200g/L, and 1 ton of ammonium chloride of every recycling need to evaporate 5 ~ 6 tons of water, 0.8 ton of coal be consumed, in addition, the salt being evaporated is also difficult
To reach industrial grade standard.These factors to be difficult to industrial applications using double decomposition alkaline, and economic and practical is poor, technique
Higher cost.Currently, also solving the above problems without preferable process unit.
Utility model content
Technical problem to be solved by the utility model is: a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride is provided,
The energy consumption of freezing and crystallizing recycling ammonium chloride can be not only reduced, efficiently production obtains sodium bicarbonate and ammonium chloride, while realizing anti-
Complete alternation of the mother liquor that should be generated in production technology, simple process, production cost are low.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of circulation of sodium bicarbonate combined producting ammonium chloride
Manufacturing device, described device include that sodium bicarbonate device, cold analysis device, salt analysis apparatus and Recycling Mother Solution is precipitated in the level-one being sequentially communicated
Sodium bicarbonate device is precipitated in device and second level, and the second level is precipitated sodium bicarbonate device one end and is connected to salt analysis apparatus, the other end
It is connected to Recycling Mother Solution device.
Further, it includes reaction kettle, brine slot and ammonium bicarbonate feeding device, the brine that sodium bicarbonate device, which is precipitated, in the level-one
Slot and ammonium bicarbonate feeding device are connected to reaction kettle.
Further, the level-one is precipitated between sodium bicarbonate device and cold analysis device and is additionally provided with sodium bicarbonate processing unit, described
Sodium bicarbonate processing unit includes equipment for separating liquid from solid, drying device and level-one fluid reservoir, and the equipment for separating liquid from solid is used for will be anti-
The sodium bicarbonate generated in kettle is answered to separate with mother liquor, the level-one fluid reservoir is for collecting the sodium bicarbonate mother solution after separating with sodium bicarbonate
(I), the sodium bicarbonate after the drying device is separated for drying with mother liquor.
Further, the cold analysis device is used to the sodium bicarbonate mother solution (I) from level-one fluid reservoir carrying out cold crystallization,
Including crystallization kettle, Outer Cooler and ice maker, the crystallization kettle is connected to Outer Cooler, and upper end clear liquid is delivered to Outer Cooler simultaneously in crystallization kettle
Crystallization kettle cold crystallization is cooled and returned to through it；The outer cooling is connected to ice maker circulation.
Further, described device further includes ammonium chloride processing unit (9), and the ammonium chloride processing unit and cold analysis device connect
It is logical, for the ammonium chloride being precipitated in cold analysis device to be filtered, is dehydrated and is dried.
Further, the salt analysis apparatus includes saltout kettle and salt feeding device, and the salt feeding device is connected to kettle of saltouing,
For adding reacting salt (such as sodium chloride) into kettle of saltouing, the feed end for kettle of saltouing is connected to cold analysis device, for collecting cold analysis
The overflowing liquid sodium bicarbonate mother solution (I-I) of device discharge simultaneously carries out salting-out crystallization to it.
Further, the kettle of saltouing includes clear liquid section, linkage section and suspension section, the height of the suspension section be 1.5 m ~
3m, the clear liquid section are equipped with overflow port, and the overflow port is precipitated sodium bicarbonate device with second level and is connected to, and the suspension section is equipped at least
One brilliant paddle outlet, the crystalline substance paddle outlet are arranged at suspension section 1/2 ~ 3/4, the top of crystalline substance the paddle outlet and crystallization kettle
Portion is connected, and the side of the linkage section and the angle of vertical direction are 60 ° ~ 90 °.
Further, it includes dense slot, heating kettle and the centrifuge being sequentially communicated that sodium bicarbonate device, which is precipitated, in the second level, described
Dense slot is used to collect the sodium bicarbonate mother solution (I-II) of kettle overflow out of saltouing, and the heating kettle is used for sodium bicarbonate mother solution (I-II)
It is heated, sodium bicarbonate is further precipitated；The sodium bicarbonate and mother liquor point that the centrifuge is used to further be precipitated in heating kettle
From.
Further, the Recycling Mother Solution device includes second level fluid reservoir, and sodium bicarbonate device and chlorine is precipitated for collecting second level
Change the brine that ammonium processing unit generates, and is returned using its supernatant as sodium bicarbonate mother solution (II) and be delivered to brine slot circulation benefit
With.
Further, blender, and the bottom of second level fluid reservoir are equipped in the second level fluid reservoir at bottom 1/4 ~ 1/2
It is connected to heating kettle, for the suspension return of bottom in second level fluid reservoir to be delivered in heating kettle.
The utility model compared with prior art, has the advantage that
1, relatively existing sodium bicarbonate combined producting ammonium chloride process units, the utility model use small using second level precipitation is added
Soda device forms and sodium bicarbonate device, cold crystallization device, salting-out crystallization device, second level is precipitated by the level-one being sequentially communicated
The circulation manufacturing device of sodium bicarbonate device, the sodium bicarbonate combined producting ammonium chloride that Recycling Mother Solution device forms is precipitated, little Su is precipitated in second level
It beats device to be used to carry out secondary precipitation sodium bicarbonate to the sodium bicarbonate mother solution (I-II) after salting-out crystallization, so that little Su in production process
The yield beaten improves 20% or more.
Wherein, cold crystallization device and salting-out crystallization device are completed to ammonium chloride crystallization operation twice, compared with prior art
By adding hydrochloric acid, the pH value of regulation system, the yield of Lai Tigao ammonium chloride, the utility model is without being added hydrochloric acid, not only
Nitrogen content to the ammonium chloride product of same high yield, and in ammonium chloride product improves 10% or more.
2, by being arranged brilliant paddle outlet at suspension section top 1/2 ~ 3/4 in kettle of saltouing, and brilliant paddle outlet with
It is connected at the top of crystallization kettle, the ammonium chloride crystalline substance paddle being precipitated in kettle of saltouing is back to crystallization kettle, on the one hand can pass through cold analysis
Further promote the precipitation of ammonium chloride；On the other hand ammonium chloride nucleus is provided for crystallization kettle, promotes the ammonium chloride in cold analysis kettle brilliant
Body increases, and makes that ammonia chloride crystal is quickly precipitated in crystallization kettle, when energy-saving.
3, Recycling Mother Solution device is added, by the brine collection that sodium bicarbonate device is precipitated in second level and ammonium chloride processing unit generates
To second level fluid reservoir, and blender is equipped in second level fluid reservoir at bottom 1/4 ~ 1/2, bottom is connected to heating kettle, is stirring
Under the action of mixing, suspension sinks down into bottom in second level fluid reservoir, and returns and be delivered to heating kettle, and clear liquid floats up to upper end conduct
Sodium bicarbonate mother solution (II) return is delivered to brine slot and recycles, and realizes economic, environmental protection without discharge.
4, the height of suspension section in kettle of saltouing is set as 1.5 m ~ 3m, which may be implemented ammonia chloride crystal and exist
The separation of infall process and supernatant.
Detailed description of the invention
Fig. 1-is a kind of circulation manufacturing device process flow chart of sodium bicarbonate combined producting ammonium chloride of the utility model；
Fig. 2-is the structural schematic diagram of kettle of saltouing in Fig. 1.
Appended drawing reference: sodium bicarbonate dress is precipitated in 1- clear liquid section, 2- linkage section, 3- suspension section, 4- crystalline substance paddle outlet, 5- level-one
Set, 6- cold analysis device, 7- salt analysis apparatus, 8- second level be precipitated sodium bicarbonate device, 9- ammonium chloride processing unit, L101- reaction kettle,
V102- brine slot, N103- ammonium bicarbonate feeding device, X104, X124- filter, V105- knockout drum, V106- level-one fluid reservoir,
V125- second level fluid reservoir, X108, X129, S122- centrifuge, F109- drying device, K110, K130- sack closer, OK111- are small
Soda finished product, P113- ice maker, V117- Lower tank, the dense slot of V121-, L121-1- heating kettle, P119- send stock pump, OK131- chlorine
Change ammonium product, P115- Outer Cooler, T116- crystallization kettle, T118- saltout kettle, B120- salt feeding device, P107- vacuum pump.
Specific embodiment
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.
Referring to Fig.1 ~ 2, a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride, described device include one be sequentially communicated
Sodium bicarbonate device 5, cold analysis device 6, salt analysis apparatus 7 and Recycling Mother Solution device is precipitated in grade and sodium bicarbonate device 8 is precipitated in second level,
The second level is precipitated 8 one end of sodium bicarbonate device and is connected to salt analysis apparatus 6, and the other end is connected to Recycling Mother Solution device.
Specifically, it includes reaction kettle L101, brine slot V102 and ammonium bicarbonate feeding device that sodium bicarbonate device 5, which is precipitated, in the level-one
N103, the brine slot V102 and ammonium bicarbonate feeding device N103 are connected to reaction kettle L101.
The level-one is precipitated between sodium bicarbonate device 5 and cold analysis device 6 and is additionally provided with sodium bicarbonate processing unit, the sodium bicarbonate
Processing unit includes equipment for separating liquid from solid, drying device F109 and level-one fluid reservoir V106, and the equipment for separating liquid from solid is used for will
The sodium bicarbonate generated in reaction kettle L101 is separated with mother liquor, after the level-one fluid reservoir V106 is separated for collection with sodium bicarbonate
Sodium bicarbonate mother solution (I), the drying device F109 are used for the sodium bicarbonate after drying is separated with mother liquor.Preferably, in the present embodiment
Equipment for separating liquid from solid is the vacuum filter and centrifuge being sequentially communicated, and the one end of filter through knockout drum V105 and level-one are stored up
Flow container V106 connection, the other end of knockout drum V105 are connect with vacuum pump P107.
Specifically, the cold analysis device 6 is used to the sodium bicarbonate mother solution (I) from level-one fluid reservoir V106 carrying out cold analysis knot
It is brilliant comprising crystallization kettle T116, Outer Cooler P115 and ice maker P113, the crystallization kettle T116 are connected to Outer Cooler P115, crystallization
Upper end clear liquid is delivered to Outer Cooler P115 and is cooled and returned to crystallization kettle T116 cold crystallization through it in kettle T116；It is described outer cold
But P115 is connected to ice maker P113 circulation.
In the present embodiment, described device further includes ammonium chloride processing unit 9, and the ammonium chloride processing unit 9 is filled with cold analysis
7 connections are set, for the ammonium chloride being precipitated in cold analysis device 7 to be filtered, is dehydrated and is dried.
Salt analysis apparatus 7 includes saltout kettle T118 and salt feeding device B120, the salt feeding device B120 and kettle of saltouing
T118 connection, for adding reacting salt into the kettle T118 that saltouts, the feed end for the kettle T118 that saltouts is connected to cold analysis device 7, is used for
It collects the overflowing liquid that cold analysis device 7 is discharged and salting-out crystallization is carried out to it.
Specifically, the kettle T118 that saltouts includes clear liquid section 1, linkage section 2 and suspension section 3, the height of the suspension section 3 is
3m, the clear liquid section 1 are equipped with overflow port, and the overflow port is precipitated sodium bicarbonate device 8 with second level and is connected to, and the suspension section 3 is equipped with
Two brilliant paddle outlets 4, the crystalline substance paddle outlet 4 are arranged at the top of suspension section 3/4, the crystalline substance paddle outlet 4 and knot
It is connected at the top of brilliant kettle T116.
Preferably, the side of the linkage section 2 and the angle of vertical direction are 60 °.
It includes dense slot V121, heating kettle L121-1 and the centrifuge S122 being sequentially communicated that sodium bicarbonate device 8, which is precipitated, in second level,
The dense slot V121 is used to collect the sodium bicarbonate mother solution (I-II) of kettle T118 overflow out of saltouing, and the heating kettle L121-1 is used for
Sodium bicarbonate mother solution (I-II) is heated, sodium bicarbonate is further precipitated；The centrifuge S122 is used for heating kettle L121-1
In the sodium bicarbonate that is further precipitated separated with mother liquor.
The Recycling Mother Solution device includes second level fluid reservoir V125, and sodium bicarbonate device 8 and chlorination is precipitated for collecting second level
The brine that ammonium processing unit 9 generates, and its supernatant is returned as sodium bicarbonate mother solution (II) and is delivered to brine slot V102 circulation
It utilizes.
Specifically, blender is equipped in the second level fluid reservoir V125 at bottom 1/ 4, and second level fluid reservoir V125
Bottom be connected to heating kettle L121-1, for by second level fluid reservoir V125 bottom suspension return be delivered to heating kettle
In L121-1.
A kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride recycles manufacture sodium bicarbonate combined producting ammonium chloride using the device
Specific operation process it is as follows:
Through brine slot V102 to capacity be directly added into 11 cubic metres of metathesis reaction kettle L101 8.5 cubic metres without
The saturated bittern of purification is warming up to 35 DEG C, then 2200 kilograms is added thereto through ammonium bicarbonate feeding device N103 ammonium bicarbonate measuring belt
Ammonium hydrogen carbonate carries out metathesis reaction, generates sodium bicarbonate, after sodium bicarbonate is filtered using vacuum filter X104, with going for 100L
Ionized water or saturation soda ash water wash at 35 DEG C of temperature, then are dehydrated with centrifuge X108, are dry through drying device F109
Furnace obtains sodium bicarbonate after being dried；
It will filter and the dewatered sodium bicarbonate mother solution of centrifuge (I) is collected to level-one fluid reservoir V106, and directly be delivered to 9 again
In the crystallization kettle T116 of cubic meter, while ammonium sulfate is added into the kettle T118 that saltouts, crystallization kettle is through Outer Cooler P115 and ice maker
P113 circulation connection, controls 15 DEG C of temperature, freezes 4h, and ammonium chloride crystals are precipitated；
The overflow from crystallization kettle T116 of sodium bicarbonate mother solution (I-I) after cold crystallization while passing through salt to the kettle T118 that saltouts
Sodium chloride is added into the kettle T118 that saltouts for feeding device B120 salt dosage belt, controls 20 DEG C of temperature, ammonium chloride further crystallizes
It is precipitated, is settled down to the middle and lower part kettle T118 exit of saltouing and is sent stock pump P119 by chlorination that is, at the brilliant paddle outlet 4 of suspension section 3
The return of ammonium crystalline substance paddle is delivered to crystallization kettle T116, collects with the ammonia chloride crystal for freezing precipitation in crystallization kettle T116, is delivered to low level
Slot V117, then finished product ammonium chloride is obtained after vacuum filter X124 filtering, centrifuge X129 dehydration, sack closer K130 packaging
OK131；
The supernatant overflow saltoutd in kettle T118 flow to heating kettle L121- through the bottom dense slot V121 to dense slot V121
1, at 35 DEG C of temperature, sodium bicarbonate is further precipitated, and obtained sodium bicarbonate is delivered to drying device after centrifuge S122 dehydration
It is dried in F109 drying oven, the sodium bicarbonate after drying obtains finished product sodium bicarbonate OK111 after sack closer K110 packaging；
The saturated bittern generated in ammonium chloride processing unit 9 and secondary precipitation sodium bicarbonate device 8 is collected to second level liquid storage
In tank V125, under the action of stirring, suspension sinks down into bottom, is back in heating kettle L121-1, and clear liquid floats as small
Soda mother liquor (II) is heated to 35 DEG C, and return, which is added in metathesis reaction kettle L101, carries out metathesis reaction with ammonium hydrogen carbonate
Sodium bicarbonate is produced, is run repeatedly, is recycled, achievees the purpose that non-wastewater discharge.
Specifically, Composition Control is NaCl 80 g/L, NH in sodium bicarbonate mother solution (I) in cyclic process4HCO3 120g/L、
NH4Cl 220g/L、SO4 2- 5g/L.Composition Control is NaCl 300g/L, NH in sodium bicarbonate mother solution (II)4HCO3 50g/L、
NH4Cl 50g/L、SO4 2-15g/L.The yield for using above-mentioned apparatus production soda is 98%, and the yield of ammonium chloride is 96%, chlorination
The content of nitrogen is 24% in ammonium product.
Claims (10)
1. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride, described device includes that sodium bicarbonate is precipitated in the level-one being sequentially communicated
Device (5), cold analysis device (6), salt analysis apparatus (7) and Recycling Mother Solution device, it is characterised in that: further include that sodium bicarbonate is precipitated in second level
Device (8), the second level are precipitated sodium bicarbonate device (8) one end and are connected to salt analysis apparatus (6), the other end and Recycling Mother Solution device
Connection.
2. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 1, it is characterised in that: the level-one
It includes reaction kettle (L101), brine slot (V102) and ammonium bicarbonate feeding device (N103), the brine slot that sodium bicarbonate device (5), which are precipitated,
(V102) it is connected to ammonium bicarbonate feeding device (N103) with reaction kettle (L101).
3. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 2, it is characterised in that: the level-one
It is precipitated between sodium bicarbonate device (5) and cold analysis device (6) and is additionally provided with sodium bicarbonate processing unit, the sodium bicarbonate processing unit includes
Equipment for separating liquid from solid, drying device (F109) and level-one fluid reservoir (V106), the equipment for separating liquid from solid are used for reaction kettle
(L101) sodium bicarbonate generated in is separated with mother liquor, and the level-one fluid reservoir (V106) is small after separating with sodium bicarbonate for collecting
Soda mother liquor (I), the drying device (F109) are used for the sodium bicarbonate after drying is separated with mother liquor.
4. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 3, it is characterised in that: the cold analysis
Device (6) will be for that will carry out cold crystallization from the sodium bicarbonate mother solution (I) of level-one fluid reservoir (V106) comprising crystallization kettle
(T116), Outer Cooler (P115) and ice maker (P113), the crystallization kettle (T116) are connected to Outer Cooler (P115), crystallization kettle
(T116) interior upper end clear liquid is delivered to Outer Cooler (P115) and is cooled and returned to crystallization kettle (T116) cold crystallization through it；It is described
Outer Cooler (P115) is connected to ice maker (P113) circulation.
5. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 1, it is characterised in that: described device
It further include ammonium chloride processing unit (9), the ammonium chloride processing unit (9) is connected to cold analysis device (6), for cold analysis device
(6) ammonium chloride being precipitated in is filtered, is dehydrated and is dried.
6. any one a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 1 ~ 5, it is characterised in that:
The salt analysis apparatus (7) includes saltouing kettle (T118) and salt feeding device (B120), the salt feeding device (B120) with saltout
Kettle (T118) connection, for adding reacting salt, feed end and cold analysis device (7) of kettle of saltouing (T118) into kettle of saltouing (T118)
Connection, for collecting the overflowing liquid sodium bicarbonate mother solution (I-I) of cold analysis device (7) discharge and carrying out salting-out crystallization to it.
7. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 6, it is characterised in that: described to saltout
Kettle (T118) includes clear liquid section (1), linkage section (2) and suspension section (3), and the height of the suspension section (3) is 1.5 m ~ 3m, institute
Clear liquid section (1) is stated equipped with overflow port, the overflow port is precipitated sodium bicarbonate device (8) with second level and is connected to, and the suspension section (3) is equipped with
At least one brilliant paddle outlet (4), the crystalline substance paddle outlet (4) are arranged at suspension section 1/2 ~ 3/4, the crystalline substance paddle outlet
(4) it is connected at the top of crystallization kettle (T116), the side of the linkage section (2) and the angle of vertical direction are 60 ° ~ 90 °.
8. any one a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 1 ~ 5, it is characterised in that:
It includes the dense slot (V121), heating kettle (L121-1) and centrifuge being sequentially communicated that sodium bicarbonate device (8), which are precipitated, in the second level
(S122), the dense slot (V121) is used to collect the sodium bicarbonate mother solution (I-II) that kettle of saltouing (T118) overflow goes out, the heating
Sodium bicarbonate is further precipitated for heating sodium bicarbonate mother solution (I-II) in kettle (L121-1)；The centrifuge (S122) is used
It is separated in by the sodium bicarbonate being further precipitated in heating kettle (L121-1) with mother liquor.
9. any one a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 1 ~ 5, it is characterised in that:
The Recycling Mother Solution device includes second level fluid reservoir (V125), is precipitated at sodium bicarbonate device (8) and ammonium chloride for collecting second level
The brine that device (9) generate is managed, and its supernatant is returned as sodium bicarbonate mother solution (II) and is delivered to brine slot (V102) circulation
It utilizes.
10. a kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride according to claim 9, which is characterized in that described two
Blender, and the bottom of second level fluid reservoir (V125) and heating kettle are equipped in grade fluid reservoir (V125) at bottom 1/4 ~ 1/2
(L121-1) it is connected to, for the suspension return of the bottom of second level fluid reservoir (V125) to be delivered in heating kettle (L121-1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920011957.4U CN209507612U (en) | 2019-01-02 | 2019-01-02 | A kind of circulation manufacturing device of sodium bicarbonate combined producting ammonium chloride |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132950A (en) * | 2021-11-30 | 2022-03-04 | 衡阳爱洁科技股份有限公司 | Method for preparing ammonium chloride by co-production of sodium bicarbonate |
| CN114751430A (en) * | 2022-04-07 | 2022-07-15 | 湖南化工设计院有限公司 | Method for preparing baking soda and coproducing ammonium chloride by low-temperature bidirectional salting-out circulation method |
-
2019
- 2019-01-02 CN CN201920011957.4U patent/CN209507612U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132950A (en) * | 2021-11-30 | 2022-03-04 | 衡阳爱洁科技股份有限公司 | Method for preparing ammonium chloride by co-production of sodium bicarbonate |
| CN114751430A (en) * | 2022-04-07 | 2022-07-15 | 湖南化工设计院有限公司 | Method for preparing baking soda and coproducing ammonium chloride by low-temperature bidirectional salting-out circulation method |
| CN114751430B (en) * | 2022-04-07 | 2023-12-01 | 湖南化工设计院有限公司 | Method for producing sodium bicarbonate and co-producing ammonium chloride by low-temperature bidirectional salting-out circulation method |
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Effective date of registration: 20210427 Address after: 421001 Hunan city of Hengyang province Zhuhui District Jin Jia Ling Patentee after: Hengyang Aijie Technology Co.,Ltd. Address before: 421002 jinjialing, Zhuhui District, Hengyang City, Hunan Province Patentee before: HUNAN YUHUA TECHNOLOGY GROUP Co.,Ltd. |