CN112142175B - Treatment process and device for purifying gypsum type brine by using calcium carbide slurry - Google Patents
Treatment process and device for purifying gypsum type brine by using calcium carbide slurry Download PDFInfo
- Publication number
- CN112142175B CN112142175B CN202011111022.7A CN202011111022A CN112142175B CN 112142175 B CN112142175 B CN 112142175B CN 202011111022 A CN202011111022 A CN 202011111022A CN 112142175 B CN112142175 B CN 112142175B
- Authority
- CN
- China
- Prior art keywords
- brine
- slurry
- mud
- calcium carbide
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The disclosure relates to the technical field of brine purification, and particularly provides a treatment process and a treatment device for purifying gypsum type brine by using calcium carbide slurry. The method comprises the following steps: introducing the carbide slurry into the compressed air gasification slurry in brine, and stirring; the amount of the calcium carbide mud is determined according to the following standard: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 ＝2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50ml of solution to be tested with 1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, calculating the adding amount of the calcium carbide mud according to the material balance, and calculating according to a formula (Mg) 2+ ]*1000 l) + P/2) 74V/a%, the addition is in kilograms. The problems that lime is used as a raw material in the brine purification process in the prior art, the cost is high, and the carbide mud is stacked to pollute the environment and occupy land resources are solved.
Description
Technical Field
The disclosure relates to the technical field of brine purification, and particularly provides a treatment process and a treatment device for purifying gypsum type brine by using calcium carbide slurry.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, in a vacuum evaporation salt production system, the content of calcium and magnesium ions in brine is particularly important for the stable operation of vacuum evaporation salt production, and the brine purification process mainly comprises a sodium carbonate (caustic soda and soda ash) process and a mirabilite-lime-flue gas process. The latter has the advantages of low cost, reduction of carbon dioxide emission in boiler tail gas, full utilization of sulfate radicals in the salt production mother liquor and the like, and is gradually adopted by many salt production enterprises. However, the inventor finds that due to the improvement of the environmental protection requirement, the lime (CaO) firing cost is continuously increased in recent years, and the cost is increased by 2 to 3 times, but the consumption and the price of the lime in the process are continuously increased, and the cost of purifying the brine is greatly increased due to the increase of the cost of the lime.
The carbide mud is produced by hydrolyzing carbide to generate acetyleneAnd (5) waste residues. The hydrolysis reaction equation is as follows: caC 2 +H 2 O＝Ca(OH) 2 +C 2 H 2 + Heat, calcium carbide mud contains Ca (OH) as the main component 2 . The production mode taking calcium carbide to synthesize PVC as a core accounts for more than 80 percent of the total PVC production industry, and 1.5-1.9T of calcium carbide mud is generated when 1T of PVC is produced. The huge production amount of the calcium carbide mud causes that the stockpiling amount of the Chinese calcium carbide mud exceeds thousands of tons so far, and the long-term stockpiling of the calcium carbide mud can not only temporarily use land resources, but also pollute soil, water and surrounding environment. Because the carbide mud has relatively complex components, low added value and poor utilization rate, only a small part of the carbide mud is used as a building cementing material, a green wall material, environmental improvement and cement production in the face of the huge stockpile, and the product quality is low due to the fact that the carbide mud contains more impurities, so that a large amount of carbide mud is still not fully and effectively utilized every year.
If the carbide mud can be used as a raw material for purifying the brine, on one hand, the brine purification cost is greatly reduced, and on the other hand, the problem of stacking the carbide mud can be solved, but the inventor finds that although the carbide mud belongs to general solid waste, the carbide mud contains calcium hydroxide, oxides, hydroxides, sulfides, phosphides of metals such as silicon, aluminum, iron, magnesium and the like, and other granular impurities and the like generated in the production and reaction of the carbide, and brings difficulty to brine purification.
Disclosure of Invention
The problems that lime is used as a raw material in the brine purification process in the prior art, the cost is high, and the carbide mud is piled up to pollute the environment and occupy land resources are solved.
In one or more embodiments of the present disclosure, a treatment process for purifying gypsum-type brine by using calcium carbide slurry is provided, which includes the following steps: introducing the carbide slurry into the compressed air gasification slurry in brine, and stirring;
the added amount of the calcium carbide mud adopts the following standard: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 ＝2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50ml of solution to be tested with 1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, and calculating according to the material balance to obtain the calcium carbide mudThe input amount is calculated by the formula ([ Mg) 2+ ]*1000 l) + P/2) 74V/a%, the addition is in kilograms.
In one or some embodiments of this disclosure, provide one kind and realize above-mentioned utilize carbide mud to carry out the device of the processing technology who purifies to gypsum type brine, including the change thick liquid pond that communicates in proper order, mix pond and pump pond, change the thick liquid pond and include that brine lets in pipeline and compressed air pipeline.
One or some of the above technical solutions have the following advantages or beneficial effects:
1) In view of the feasibility of the process principle, repeated tests and improvements are carried out, and the treatment method for purifying gypsum type brine by using the carbide mud can reduce the brine purification cost and solve the treatment problem of part of the carbide mud, so that the carbide mud pollution is reduced. According to the calculation of million tons of salt yield, the consumed calcium carbide mud amount per year is about 2.4 ten thousand tons, and the treatment mode has profound influence on the reduction of the calcium carbide mud environmental pollution problem.
2) This application rationally sets up the p value through the formula, both under the laboratory condition, mix in continuously adding the gypsum type brine sample of treating purifying with carbide mud, na 2 SO 4 During this period, na is continuously tested as an intermediate product of brine purification process 2 SO 4 When the content of Na 2 SO 4 When the content reaches a predetermined value, the purification is considered to be complete, and Ca (OH) participating in the reaction is pushed out according to the amount of NaOH generated at that time 2 And further obtaining the amount of the carbide mud required to participate in the reaction. The total amount of the required carbide mud can be obtained when the reaction starts, and the reaction and the assay are not needed, thereby being beneficial to production planning.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and, together with the description, serve to explain the disclosure and not to limit the disclosure.
FIG. 1 is a top view of the process for purifying gypsum-based brine using calcium carbide mud of example 1.
FIG. 2 is a front view of the process for purifying gypsum-based brine using calcium carbide slurry in example 1.
Wherein: 1. a pulping tank; 2. a mixing tank; 3. a pump pool; 4. introducing brine into a pipeline; 5. a compressed air conduit; 6. a stirring device; 7. an emulsion; 8. filtering with a screen; 9. submerged slurry pump, 10, mud dam.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making any creative effort, shall fall within the protection scope of the disclosure.
The problems that lime is used as a raw material in the brine purification process in the prior art, the cost is high, and the carbide mud is piled up to pollute the environment and occupy land resources are solved.
Through analysis, the content of effective calcium hydroxide in the carbide mud reaches over 50 percent, and after the carbide mud is used for brine purification, the main component of the carbide mud is Ca (OH) 2 With Na 2 SO 4 Causticizing reaction to generate NaOH and Mg 2+ Production of Mg (OH) 2 Precipitation, simultaneous CO in secondary reaction 2 Reacting with NaOH to form sufficient Na 2 CO 3 Further precipitating Ca 2+ To achieve the aim of removing calcium and magnesium ions, the calcium carbide mud is wet-based solid waste, and the effective Ca (OH) of the calcium carbide mud 2 Can be directly dispersed into brine without emulsification, and the production efficiency is further improved.
In one or more embodiments of the present disclosure, a treatment process for purifying gypsum-type brine by using calcium carbide slurry is provided, which includes the following steps: introducing the carbide slurry into the compressed air gasification slurry in brine, and stirring;
the amount of the calcium carbide mud is determined according to the following standard: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 ＝2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50ml of solution to be tested with 1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, calculating the adding amount of the calcium carbide mud according to the material balance, and calculating according to a formula (Mg) 2+ ]*1000l) + P/2) × 74 × v/a%, the amount added is in kg.
The principle of obtaining the P value is as follows: under the condition of laboratory, the calcium carbide mud is continuously added into the gypsum type brine sample to be purified for mixing, na 2 SO 4 As an intermediate product of brine purification process, na was continuously tested during the process 2 SO 4 When the content of Na 2 SO 4 When the content reaches a predetermined value, the purification is considered to be complete, and Ca (OH) participating in the reaction is pushed out according to the amount of NaOH generated at that time 2 And further obtaining the amount of the carbide mud required to participate in the reaction.
The rationality of the formula is confirmed by experiments in the present disclosure, and the formula ([ Mg2 +)]*1000 l) + P/2) 74V/a% of the total, [ Mg2+]The concentration of magnesium ions in the brine, V the volume of the brine to be purified, and a the mass concentration of the brine to be purified are taken as numerical values. For example, P =30 (preset), mg 2+ =0.05g/L (2.08 mmol/L as converted), and V is the actual volume (m) 3 ) And A% is taken as 50% value, then according to [ (2.08 + 30/2) × 74 v%]Calculated as/50%.
Preferably, the method further comprises sampling and detecting the P value and the calcium ion concentration after the stirring is finished: p value and [ Ca 2+ ]In accordance with the ratio (P-4)/50 > [ Ca 2+ ]Then, the brine can be discharged, the P value is insufficient or [ Ca ] 2+ ]On the high side, the calcium carbide mud is added continuously until the P value and [ Ca ] are reached 2+ ]The proportion of the raw materials is required to be capable of entering the next production.
In the prior art, the scheme for industrially detecting whether brine purification is complete is generally to test the pH value, but the method is generally suitable for purifying brine by lime, but the brine purification by lime has fewer impurities and is simple in scheme, and the brine purification by carbide mud has more impurities, and oxides, hydroxides, sulfides, phosphides and the like of metals such as silicon, aluminum, iron, magnesium and the like all bring influence on the pH value, so that the pH value detection method is not suitable for the scheme for purifying brine by carbide mud. Since the present disclosure calculates the added amount of the calcium carbide slurry as the P value, ca 2+ The concentration can reflect whether the reaction is complete, and therefore, it is reasonable to use these two parameters as criteria.
Preferably, the slurry preparation method comprises the steps of flushing and releasing the carbide slurry by means of the pressure of a brine pipeline, and introducing compressed air into the carbide slurry after a period of time;
preferably, the pressure of the brine pipeline is 0.2-1Mpa;
further preferably, the pressure of the brine pipeline is 0.3Mpa. The pressure of the brine pipeline is proper, if the pressure is too small, the carbide mud cannot be flushed, and if the pressure is too large, the carbide mud is not mixed uniformly.
Preferably, the method further comprises the following feeding steps: calculating to obtain the mass of the needed calcium carbide mud, stacking the calcium carbide mud in a container, introducing marinade into the container, introducing compressed air after the marinade is 1/3-1/2 of the calcium carbide mud, blowing air, and stirring while blowing air. The inventor finds through repeated tests that once only lets in whole marinade, then carbide mud is difficult for being bloated, prepares the inefficiency step-down, and the carbide mud of waiting to roll out lasts to reduce, reduces the pond liquid level, and after carbide mud all shifted, add the large brine addition volume again to wash the mud pipeline.
Preferably, the purified emulsion is introduced into the next-stage reactor, brine is continuously supplied while air is introduced, the liquid level is kept stably rising until the brine just submerges the carbide mud, and the feeding is finished.
In one or some embodiments of this disclosure, provide one kind and realize the above-mentioned processing technology's that utilizes carbide mud to purify gypsum type brine device, its characterized in that is including the change thick liquid pond that communicates in proper order, mix pond and pump pond, change the thick liquid pond and include that brine lets in pipeline and compressed air pipeline.
Preferably, stainless steel filter screens are respectively arranged between the slurry melting tank and the mixing tank and between the mixing tank and the pump tank; preferably, the pore diameter of the stainless steel mesh is 9-15 × 9-15mm; more preferably 10 × 10mm.
Preferably, a mud blocking weir is respectively arranged at the bottom between the pulping pool and the mixing pool and between the mixing pool and the pump pool;
preferably, the height of the mud-blocking weir is 1/10-1/7 of the height of the connection part of the slurry pond and the mixing pond or the connection part of the mixing pond and the pump pond.
Preferably, the pump pool comprises a submerged slurry pump. The submerged slurry pump continuously feeds the emulsion into the next reaction procedure
Preferably, the mixing tank comprises a stirring device, and the stirring device is positioned at the geometric center of the mixing tank.
Example 1
As shown in fig. 1 or 2, this embodiment provides a device for realizing utilizing carbide mud to purify gypsum type brine, including change thick liquid pond 1, mixing tank 2 and pump pond 3 that communicate in proper order, change thick liquid pond 1 and include that brine lets in pipeline 4 and compressed air pipeline 5.
A filter screen 8 is respectively arranged between the slurry pond 1 and the mixing pond 2 and between the mixing pond 2 and the pump pond 3; the filter screen 8 is a stainless steel mesh with the aperture of 9-15 x 9-15mm; more preferably 10 × 10mm.
A mud blocking weir 10 is respectively arranged between the slurry pond 1 and the mixing pond 2 and at the bottom between the mixing pond 2 and the pump pond 3;
the height of the mud-blocking weir 10 is 1/10-1/7 of the height of the connection part of the slurry pond 1 and the mixing pond 2 or the connection part of the mixing pond 2 and the pump pond 3.
The pump pool 3 comprises a submerged slurry pump 9.
The mixing tank 2 comprises a stirring device 6, and the stirring device 6 is positioned at the geometric center of the mixing tank 2.
Example 2
This example provides a treatment process for purifying gypsum-based brine using gypsum slurry, which is carried out in the apparatus described in example 1.
The method comprises the following steps: slurrying the calcium carbide mud in brine, calculating to obtain the required quality of the calcium carbide mud, stacking the calcium carbide mud in a container, introducing marinade into the container, flushing and releasing the calcium carbide mud by means of the pressure (0.3 Mpa) of a brine pipeline, introducing compressed air after the marinade is submerged 1/3 of the calcium carbide mud, performing air blowing, and stirring while performing air blowing.
And (3) introducing the purified emulsion into a next-stage reactor, continuously supplying brine while introducing air, keeping the liquid level stably rising until the brine just submerges the carbide mud, and ending feeding.
The amount of the calcium carbide mud is adoptedThe following criteria were used: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 ＝2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50ml of solution to be tested with 1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, calculating the adding amount of the calcium carbide mud according to the material balance, and calculating according to a formula (Mg) 2+ ]*1000 l) + P/2) 74V/a%, the addition is in kilograms.
Gypsum type bittern total 4800m 3 The required calcium carbide mud amount is calculated according to a formula and is about 12 tons.
And the method also comprises the following steps of sampling and detecting the P value and the calcium ion concentration after the stirring is finished: p value and [ Ca 2+ ]In accordance with the ratio (P-4)/50 > [ Ca 2+ ]Then, the brine can be discharged, the P value is insufficient or [ Ca ] 2+ ]On the high side, the calcium carbide mud is added continuously until the P value and [ Ca ] are reached 2+ ]The proportion of the raw materials is required to be capable of entering the next production.
Example 3
This example provides a treatment process for purifying gypsum-based brine using gypsum slurry, which is carried out in the apparatus described in example 1.
The method comprises the following steps: slurrying the calcium carbide mud in brine, calculating to obtain the required quality of the calcium carbide mud, stacking the calcium carbide mud in a container, introducing marinade into the container, flushing and releasing the calcium carbide mud by means of the pressure (1 Mpa) of a brine pipeline, introducing compressed air after the marinade is 1/2 of the calcium carbide mud, performing air blowing, and stirring while performing air blowing.
And (3) introducing the purified emulsion into a next-stage reactor, continuously supplying brine while introducing air, keeping the liquid level stably rising until the brine just submerges the carbide mud, and ending feeding.
The amount of the calcium carbide mud is determined according to the following standard: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 ＝2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50ml of solution to be tested with 1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, calculating the adding amount of the calcium carbide mud according to the material balance, and calculating according to a formula (Mg) 2+ ]*1000 l) + P/2) 74V/a%, the addition is in kilograms.
Gypsum type bittern total 5000m 3 And the required calcium carbide mud amount is calculated according to a formula and is about 12.64 tons.
And sampling and detecting the P value and the calcium ion concentration after the stirring is finished: p value and [ Ca 2+ ]In accordance with the ratio (P-4)/50 > [ Ca 2+ ]Then, the brine can be discharged, the P value is insufficient or [ Ca ] 2+ ]On the high side, the calcium carbide mud is added continuously until the P value and [ Ca ] are reached 2+ ]The proportion of the raw materials is required to be capable of entering the next production.
Example 4
This example provides a treatment process for purifying gypsum-based brine using gypsum slurry, which is carried out in the apparatus described in example 1.
The method comprises the following steps: slurrying the calcium carbide mud in brine, calculating to obtain the required quality of the calcium carbide mud, stacking the calcium carbide mud in a container, introducing marinade into the container, flushing and releasing the calcium carbide mud by means of the pressure (0.2 Mpa) of a brine pipeline, introducing compressed air after the marinade is 1/2 of the calcium carbide mud, performing air blowing, and stirring while performing air blowing.
And (3) introducing the purified emulsion into a next-stage reactor, continuously supplying brine while introducing air, keeping the liquid level stably rising until the brine just submerges the carbide mud, and ending feeding.
The amount of the calcium carbide mud is determined according to the following standard: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 ＝2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50ml of solution to be detected with 1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, calculating the added amount of the calcium carbide mud according to the material balance, and calculating according to a formula (Mg) 2+ ]*1000 l) + P/2) 74V/a%, the addition is in kilograms.
8000m of gypsum type brine 3 The required calcium carbide mud amount is calculated according to a formula and is about 20 tons.
And the method also comprises the following steps of sampling and detecting the P value and the calcium ion concentration after the stirring is finished: p value and [ Ca 2+ ]In accordance with the ratio (P-4)/50 > [ Ca 2+ ]Then, the brine can be discharged, the P value is insufficient or [ Ca ] 2+ ]On the high side, the calcium carbide mud is added continuously until the P value and [ Ca ] are reached 2+ ]The proportion of (A) is required, so that the next production can be carried out.
Comparative example 1
This example provides a treatment process for purifying gypsum-based brine using gypsum slurry, which is carried out in the apparatus described in example 1. The difference from example 2 is that the calcium carbide mud and the marinade are added at one time.
Gypsum type bittern total 4800m 3 Finally, the amount of the calcium carbide mud is about 18 tons.
Comparative example 2
This example provides a treatment process for purifying gypsum-based brine using gypsum slurry, which is carried out in the apparatus described in example 1. The difference from example 2 is that compressed air is not introduced.
Gypsum type bittern total 4800m 3 Finally, the amount of calcium carbide mud is about 25 tons.
The disclosure is intended to cover by the appended claims all such modifications as fall within the true spirit and scope of the disclosure.
Claims (8)
1. A treatment process for purifying gypsum type brine by using calcium carbide slurry is characterized by comprising the following steps: introducing the carbide slurry into the compressed air gasification slurry in brine, and stirring;
the added amount of the calcium carbide mud adopts the following standard: according to the reaction equation Na 2 SO 4 +Ca(OH) 2 =2NaOH+CaSO 4 The P value is obtained in advance, and the method for obtaining the P value comprises the following steps: titrating 50mL of solution to be tested with 0.1mol/L hydrochloric acid, multiplying the volume of the consumed hydrochloric acid by 2, calculating the adding amount of the calcium carbide mud according to the material balance, and calculating according to a formula ([ Mg) 2+ ]* 1000P/2) 74V/a% and the unit of the added amount of the carbide mud is kg;
wherein [ Mg 2+ ]Is Mg in brine 2+ The unit of (1) is mmol/L; v is the volume of brine to be purified and is given in unit
；
The slurry preparation method comprises the steps of flushing and releasing the carbide slurry by means of pressure of a brine pipeline, and introducing compressed air into the carbide slurry after a period of time;
the pressure of the brine pipeline is 0.2-1Mpa;
also comprises a feeding step: after the marinade is 1/3-1/2 of the calcium carbide mud, introducing compressed air, blowing air, and stirring while blowing air;
introducing the purified emulsion into a next-stage reactor, continuously supplying brine while introducing air, keeping the liquid level stably rising until the brine just submerges the carbide mud, and ending feeding;
and the method also comprises the following steps of sampling and detecting the P value and the calcium ion concentration after the stirring is finished: p value and [ Ca 2+ ]In accordance with the ratio ((P-4)/50) > [ Ca > 2+ ]Then, the brine can be discharged, and the P value is insufficient or [ Ca ] 2+ ]On the high side, the calcium carbide mud is added continuously until the P value and [ Ca ] are reached 2+ ]The proportion of the raw materials is required to be capable of entering the next production.
2. The process of claim 1, wherein the brine line pressure is 0.3Mpa.
3. A process according to any one of claims 1-2, wherein the treatment apparatus comprises a slurry pond, a mixing pond and a pump pond, which are connected in series, wherein the slurry pond comprises a brine inlet pipeline and a compressed air pipeline.
4. A process according to claim 3, wherein a stainless steel screen is disposed between the slurry tank and the mixing tank, and between the mixing tank and the pump tank; the aperture of the stainless steel filter screen is 9-15mm 9-15mm.
5. The process of claim 4, wherein the stainless steel screen has a pore size of 10mm to 10mm.
6. A process according to claim 3, wherein a mud dam is disposed between the slurry tank and the mixing tank, and between the mixing tank and the pump tank;
the height of the mud blocking weir is 1/10-1/7 of the height of the joint of the slurry tank and the mixing tank or the joint of the mixing tank and the pump tank.
7. A process according to claim 3, wherein the pump sump comprises a submerged slurry pump.
8. A process according to claim 3, wherein the mixing tank comprises a stirring device, the stirring device being located in the geometric center of the mixing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011111022.7A CN112142175B (en) | 2020-10-16 | 2020-10-16 | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011111022.7A CN112142175B (en) | 2020-10-16 | 2020-10-16 | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112142175A CN112142175A (en) | 2020-12-29 |
| CN112142175B true CN112142175B (en) | 2022-12-06 |
Family
ID=73951248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011111022.7A Active CN112142175B (en) | 2020-10-16 | 2020-10-16 | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112142175B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289200A (en) * | 2007-04-16 | 2008-10-22 | 中国盐业总公司 | Technological process for purifying bittern |
| CN104477940A (en) * | 2014-12-02 | 2015-04-01 | 湖南省湘衡盐化有限责任公司 | Brine purification technique by carbide slag/lime-flue gas process |
| CN109231250A (en) * | 2018-12-03 | 2019-01-18 | 衡阳师范学院 | A method of calcining carbide slag prepares calcium carbonate in Galuber's salt type brine cleaning procedure |
| CN109354051A (en) * | 2018-12-03 | 2019-02-19 | 衡阳师范学院 | A method of calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime |
-
2020
- 2020-10-16 CN CN202011111022.7A patent/CN112142175B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289200A (en) * | 2007-04-16 | 2008-10-22 | 中国盐业总公司 | Technological process for purifying bittern |
| CN104477940A (en) * | 2014-12-02 | 2015-04-01 | 湖南省湘衡盐化有限责任公司 | Brine purification technique by carbide slag/lime-flue gas process |
| CN109231250A (en) * | 2018-12-03 | 2019-01-18 | 衡阳师范学院 | A method of calcining carbide slag prepares calcium carbonate in Galuber's salt type brine cleaning procedure |
| CN109354051A (en) * | 2018-12-03 | 2019-02-19 | 衡阳师范学院 | A method of calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime |
Non-Patent Citations (1)
| Title |
|---|
| 芒硝型卤水石灰—烟道气法净化工艺实验研究;周国敏等;《盐业与化工》;20130131;第42卷(第1期);第26-28页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112142175A (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105060545A (en) | System and method for softening treatment of desulfurization wastewater of coal-fired power plant | |
| CN104803521A (en) | Desulphurization waste water purifying system and desulphurization waste water purifying process | |
| CN107089675B (en) | A kind of method for the distilled ammonia wastewater recycling that ammonia-soda process soda ash is discharged | |
| CN109290060A (en) | A kind of process for subsequent treatment and phosphate ore floatation method of phosphate ore flotation tailings | |
| AU2013308317A1 (en) | Method for removing sulphate, calcium and/or other soluble metals from waste water | |
| CN105000585B (en) | In ardealite and purification process technique | |
| US11414323B2 (en) | Treatment method for reducing carbon dioxide emission of combustion exhaust gas | |
| CN109095578A (en) | A kind of method of oxalate precipitation method recycling power plant desulfurization wastewater calcium and magnesium | |
| CN103880042B (en) | The method of saltcake refined brine and preventing scaring | |
| CN106277005B (en) | A kind of method that ice crystal, calcium carbonate and sodium sulphate are reclaimed in the resource from calcium fluoride sludge | |
| CN101091875A (en) | Method for recovering ammonia from by-product of ammonia process of desulfurization for boiler flue gas | |
| CN102432122A (en) | Method for treating circulating water | |
| CN112142175B (en) | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry | |
| CN108455773A (en) | A kind of system and method for the industrially desulfurized waste water of processing | |
| CN208995357U (en) | A kind of circulating red mud dealkalization system of water-saving efficient | |
| CN101759202B (en) | Method for removing sulfate radicals in saline water by using liquid barium chloride | |
| CN102795701A (en) | Method for treating acidic waste water from titanium dioxide preparation by sulfuric acid method | |
| CN104445724B (en) | High chlorine root wastewater recycling device and using method thereof in generated by polyvinyl chloride by calcium carbide production | |
| CN109095483A (en) | A kind of system and its application method of oxalate precipitation method recycling power plant desulfurization wastewater calcium and magnesium | |
| CN110078040A (en) | Utilize the method and system of wood activated charcoal production Sewage treatment guanite | |
| CN102070274A (en) | Method and device for treating sulfonated wastewater by using calcium salt precipitation method | |
| CN213679853U (en) | Preparation system of liquid salt for alkali production | |
| CN108947156B (en) | Water-saving and efficient circulating red mud dealkalization system and method | |
| CN209456086U (en) | A kind of system of oxalate precipitation method recycling power plant desulfurization wastewater calcium and magnesium | |
| CN208345942U (en) | A kind of system handling industrially desulfurized waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |