CN101898771A - Method for preparing caustic soda and carbon/sulfur calcium mixture from sodium sulfide waste residues - Google Patents
Method for preparing caustic soda and carbon/sulfur calcium mixture from sodium sulfide waste residues Download PDFInfo
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- CN101898771A CN101898771A CN2010102440099A CN201010244009A CN101898771A CN 101898771 A CN101898771 A CN 101898771A CN 2010102440099 A CN2010102440099 A CN 2010102440099A CN 201010244009 A CN201010244009 A CN 201010244009A CN 101898771 A CN101898771 A CN 101898771A
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Abstract
The invention provides a method for preparing caustic soda and carbon/sulfur calcium mixture from sodium sulfide waste residues. The method comprises the following steps: converting the mass content and molar content of sodium sulfide in the waste residues, and preparing sodium sulfide waste residue suspension and calcium hydroxide solution; sequentially feeding the sodium sulfide waste residue suspension and the calcium hydroxide solution into a corrosion-resistant reactor by the ratio of the sum of the molar weight of sodium sulfide and calcium hydroxide to the molar weight of calcium hydroxide being 1:0.5-1 to conduct chemical reaction to obtain a mixture containing sodium hydroxide, calcium carbonate and calcium sulfide; filtering the mixture by a filter to obtain the solution containing sodium hydroxide and the filter cake containing the mixture of calcium carbonate and calcium sulfide; feeding the solution containing sodium hydroxide into a distiller to be distilled at the normal pressure to obtain the massive sodium hydroxide product; rinsing the filter cake containing the mixture of calcium carbonate and calcium sulfide by a rinsing machine to obtain the coarse product of the carbon/sulfur calcium mixture; and drying the coarse product by a drier and crushing the dried coarse product by a crusher to obtain the carbon/sulfur calcium mixture product. The method of the invention eliminates environmental pollution caused by the sodium sulfide waste residues.
Description
Technical field
The present invention relates to the improvement of barium sulfate by-product sodium sulfide method gained Sodium Sulphide waste residue and the technical field of utilization, particularly prepare the method for caustic soda and carbon/sulfur calcium mixture with barium sulfate by-product sodium sulfide method gained Sodium Sulphide waste residue.
Background technology
The industrial process of Sodium Sulphide (sodium sulphite) mainly contains coal dust reduction of mirabilite method, gas reduction method, barium sulfate by-product sodium sulfide method and hydrogen sulfide method.Wherein, barium sulfate by-product sodium sulfide method is to produce barium sulphide with coal reduction barium sulfate, adds metabisulfite solution again and handles, and generates sodium sulphite and process white, separates evaporation concentration and getting through suction filtration.This method is discharged a large amount of Sodium Sulphide waste residues, and is wherein most of from carbon contained in the coal, and fails isolating sodium sulphite.After testing, the content of yellow soda ash in this Sodium Sulphide waste residue reaches 12-15%, and sodium sulphite is 25-30%.
Total institute is known, and sodium sulphite is very easily water-soluble, and the aqueous solution is strong basicity, and extremely strong pungency and corrodibility are arranged when contacting with mucous membrane with skin, can cause when touching skin and hair and burn.Especially react the hydrogen sulfide that generates with water, behind the absorption human body, thereby cause the extremely death of poisoning, therefore,, not only can cause environmental pollution, also have certain potential safety hazard if the Sodium Sulphide waste residue is not used and administers.
Yet, about the comprehensive utilization and the improvement of Sodium Sulphide waste residue, at present, not having feasible method, producer's majority of production Sodium Sulphide waste residue is directly stacked the Sodium Sulphide waste residue or is buried, and this is undoubted, can cause very serious environmental pollution and deterioration.
Therefore, be necessary to explore the method for from the Sodium Sulphide waste residue, extracting sodium sulphite, thereby effectively excavate the potential value of Sodium Sulphide waste residue, eliminate environmental pollution and potential safety hazard.For this reason, the applicant has explored the method for preparing caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue, and this method effectively is converted into caustic soda and carbon/sulfur calcium mixture with the effective constituent in the Sodium Sulphide.
Wherein, caustic soda is soluble in water, is strong basicity, and the Na+ ion can both be provided.These character are widely used in all departments such as soap system, weaving, printing and dyeing, bleaching, papermaking, turpentole, metallurgy and other chemical industry them, are a kind of important chemical material.
Lime carbonate is a kind of important raw mineral materials, can be used as the filler of industries such as rubber, plastics, papermaking, coating and printing ink.Be widely used in the productions such as organic synthesis, metallurgy, glass and asbestos.Also can be used as middle kind of agent, the gastroduodenal ulcer disease of trade effluent antacid, acidosic toxinicide, contain the release agent of SO2 remover, dairy feed compound and tar felt in the SO2 waste gas.The raw material that also can be used as tooth powder, toothpaste and other makeup.
And sulfurated lime is at high temperature made by calcium sulphate powders and coke or wood chip.Or 1000 degree down with H
2S and H
2Mixed gas feeds in the lime carbonate reaction after do not have steam and produce, and continues logical H
2Several minutes, put cold making.It mainly is used as tanning trichogen, agricultural bactericide, luminescent material, lubricant additive, and produces veterinary drug etc., also is a kind of ten minutes useful industrial raw material.
Summary of the invention
The objective of the invention is to, the method for preparing caustic soda and carbon/sulfur calcium mixture with barium sulfate by-product sodium sulfide method gained Sodium Sulphide waste residue is provided, this method is utilized the sodium sulphite reaction in calcium hydroxide and the Sodium Sulphide waste residue, make sodium hydroxide, lime carbonate and sulfurated lime, thereby realized turning waste into wealth, eliminated of the pollution of Sodium Sulphide waste residue environment.
Technical scheme of the present invention is as follows: prepare the method for caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue, it is characterized in that, comprise the steps:
Steps A: the mass content and the molar content of sodium sulphite in the conversion Sodium Sulphide waste residue, and configuration Sodium Sulphide waste residue suspension liquid and aqua calcis;
Step B: is 1: 0.5～1 successively to drop into protection against corrosion reactor (1) lining with Sodium Sulphide waste residue suspension liquid and aqua calcis with the ratio of the molar weight sum of sodium sulphite and hydrogen-oxygen calcium pure substance and the molar weight of calcium hydroxide, carry out chemical reaction, obtain containing the mixture of sodium hydroxide, lime carbonate and sulfurated lime;
Step C: step B gained mixture is filtered through filter (2), filter the clarifying filter cake that contains the solution of hydrogen-oxygen sodium and contain lime carbonate and sulfurated lime mixture;
Step D: the solution that contains hydrogen-oxygen sodium that step C is obtained sends into that air distillation is blocky sodium hydroxide product (4) in the distiller (3);
Step e: the filter cake that contains lime carbonate and sulfurated lime mixture that step C is obtained washs through washing machine (5), obtain carbon/sulfur calcium mixture crude product (6), with carbon/sulfur calcium mixture crude product (6) drying machine (7) drying, pulverizer (8) is pulverized, and obtains carbon/sulfur calcium mixture product (9).
Described Sodium Sulphide waste residue is the product with barium sulfate by-product sodium sulfide method gained.
Before the configuration Sodium Sulphide waste residue suspension liquid, earlier described Sodium Sulphide waste residue is ground into 40 orders.
The described chemical reaction of step B carries out under slowly stirring.
The principle of chemical reaction involved in the present invention is:
Na
2S+Ca(OH)
2＝＝＝＝＝2NaOH+CaS
Na
2CO
3+Ca(OH)
2＝＝＝＝＝2NaOH+CaCO
3
The invention has the beneficial effects as follows: the method for preparing caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue of the present invention, this method will be converted into industrial raw material sodium hydroxide, lime carbonate and sulfurated lime with the Sodium Sulphide waste residue of barium sulfate by-product sodium sulfide method gained, thereby eliminated in the Sodium Sulphide waste residue sodium sulphite to the pollution of environment, effectively utilized the potential value of Sodium Sulphide waste residue, having realized turning waste into wealth, is a method of great practical value.
Description of drawings
Fig. 1 is the process flow sheet for preparing the method for caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue of the present invention, wherein, (1)--protection against corrosion reactor, (2)--strainer, (3)--distiller, (4)--the sodium hydroxide product, (5)--washing machine, (6)--sulfurated lime crude product, (7)--drying machine, (8)--pulverizer, (9)--carbon/sulfur calcium mixture product.
Embodiment
Embodiment 1
With reference to Fig. 1, the method for preparing caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue, take by weighing the Sodium Sulphide waste residue of certain station-service barium sulfate by-product sodium sulfide method gained, convert that sodium sulphite quality percentage composition is 25% in this Sodium Sulphide waste residue, yellow soda ash quality percentage composition is 15%, take by weighing Sodium Sulphide waste residue 500kg, and calculate the molar weight of sodium sulphite and yellow soda ash in the Sodium Sulphide waste residue waste residue of described weighing, it is 40 purpose powder that the Sodium Sulphide waste residue is pulverized, then, Sodium Sulphide waste residue and water is miscible, be configured to Sodium Sulphide waste residue suspension liquid; Simultaneously the ratio according to the molar weight sum of sodium sulphite and yellow soda ash and the molar weight of calcium hydroxide is 1: 1 configuration aqua calcis; Sodium Sulphide waste residue suspension liquid and aqua calcis are successively dropped into protection against corrosion reactor (1) lining, carry out chemical reaction under slowly stirring, obtain containing the mixture of sodium hydroxide, lime carbonate and sulfurated lime; The gained mixture is filtered through filter (2), and filter obtains clarifying sodium hydroxide solution, contains the filter cake of lime carbonate and sulfurated lime; Sodium hydroxide solution is sent into air distillation blocky sodium hydroxide product (4) in the distiller (3), and it contains the sodium hydroxide pure substance is 184.27kg; The filter cake that will contain lime carbonate and sulfurated lime is through washing machine (5) washing, obtain carbon/sulfur calcium mixture crude product (6), with carbon/sulfur calcium mixture crude product (6) drying machine (7) drying, pulverizer (8) is pulverized, obtain carbon/sulfur calcium mixture product (9), it contains the lime carbonate pure substance is 70.75kg, and the sulfurated lime pure substance is 115.4kg.
With reference to Fig. 1, the method for preparing caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue, take by weighing the Sodium Sulphide waste residue of certain station-service barium sulfate by-product sodium sulfide method gained, convert that sodium sulphite quality percentage composition is 25% in this Sodium Sulphide waste residue, yellow soda ash quality percentage composition is 15%, take by weighing Sodium Sulphide waste residue 500kg, and calculate the molar weight of sodium sulphite and yellow soda ash in the Sodium Sulphide waste residue waste residue of described weighing, it is 40 purpose powder that the Sodium Sulphide waste residue is pulverized, then, Sodium Sulphide waste residue and water is miscible, be configured to Sodium Sulphide waste residue suspension liquid; Simultaneously the ratio according to the molar weight sum of sodium sulphite and yellow soda ash and the molar weight of calcium hydroxide is 1: 0.5 configuration aqua calcis; Sodium Sulphide waste residue suspension liquid and aqua calcis are successively dropped into protection against corrosion reactor (1) lining, carry out chemical reaction under slowly stirring, obtain containing the mixture of sodium hydroxide, lime carbonate and sulfurated lime; The gained mixture is filtered through filter (2), and filter obtains clarifying sodium hydroxide solution, contains the filter cake of lime carbonate and sulfurated lime; Sodium hydroxide solution is sent into air distillation blocky sodium hydroxide product (4) in the distiller (3), and it contains the sodium hydroxide pure substance is 92.14kg; The filter cake that will contain lime carbonate and sulfurated lime is through washing machine (5) washing, obtain carbon/sulfur calcium mixture crude product (6), with carbon/sulfur calcium mixture crude product (6) drying machine (7) drying, pulverizer (8) is pulverized, obtain carbon/sulfur calcium mixture product (9), it contains the lime carbonate pure substance is 35.28kg, and the sulfurated lime pure substance is 57.7kg.
With reference to Fig. 1, the method for preparing caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue, take by weighing the Sodium Sulphide waste residue of certain station-service barium sulfate by-product sodium sulfide method gained, convert that sodium sulphite quality percentage composition is 25% in this Sodium Sulphide waste residue, yellow soda ash quality percentage composition is 15%, take by weighing Sodium Sulphide waste residue 500kg, and calculate the molar weight of sodium sulphite and yellow soda ash in the Sodium Sulphide waste residue waste residue of described weighing, it is 40 purpose powder that the Sodium Sulphide waste residue is pulverized, then, Sodium Sulphide waste residue and water is miscible, be configured to Sodium Sulphide waste residue suspension liquid; Simultaneously the ratio according to the molar weight sum of sodium sulphite and yellow soda ash and the molar weight of calcium hydroxide is 1: 0.7 configuration aqua calcis; Sodium Sulphide waste residue suspension liquid and aqua calcis are successively dropped into protection against corrosion reactor (1) lining, carry out chemical reaction under slowly stirring, obtain containing the mixture of sodium hydroxide, lime carbonate and sulfurated lime; The gained mixture is filtered through filter (2), and filter obtains clarifying sodium hydroxide solution, contains the filter cake of lime carbonate and sulfurated lime; Sodium hydroxide solution is sent into air distillation blocky sodium hydroxide product (4) in the distiller (3), and it contains the sodium hydroxide pure substance is 128.99kg; The filter cake that will contain lime carbonate and sulfurated lime is through washing machine (5) washing, obtain carbon/sulfur calcium mixture crude product (6), with carbon/sulfur calcium mixture crude product (6) drying machine (7) drying, pulverizer (8) is pulverized, obtain carbon/sulfur calcium mixture product (9), it contains the lime carbonate pure substance is 49.5kg, and the sulfurated lime pure substance is 80.7kg.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form can be flexible and changeable, can the subseries method.Just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (4)
1. prepare the method for caustic soda and carbon/sulfur calcium mixture with the Sodium Sulphide waste residue, it is characterized in that, comprise the steps:
Steps A: the mass content and the molar content of sodium sulphite in the conversion Sodium Sulphide waste residue, and configuration Sodium Sulphide waste residue suspension liquid and aqua calcis;
Step B: is 1: 0.5～1 successively to drop into protection against corrosion reactor (1) lining with Sodium Sulphide waste residue suspension liquid and aqua calcis with the ratio of the molar weight sum of sodium sulphite and hydrogen-oxygen calcium pure substance and the molar weight of calcium hydroxide, carry out chemical reaction, obtain containing the mixture of sodium hydroxide, lime carbonate and sulfurated lime;
Step C: step B gained mixture is filtered through filter (2), filter the clarifying filter cake that contains the solution of hydrogen-oxygen sodium and contain lime carbonate and sulfurated lime mixture;
Step D: the solution that contains hydrogen-oxygen sodium that step C is obtained sends into that air distillation is blocky sodium hydroxide product (4) in the distiller (3);
Step e: the filter cake that contains lime carbonate and sulfurated lime mixture that step C is obtained washs through washing machine (5), obtain carbon/sulfur calcium mixture crude product (6), with carbon/sulfur calcium mixture crude product (6) drying machine (7) drying, pulverizer (8) is pulverized, and obtains carbon/sulfur calcium mixture product (9).
2. as claimed in claim 1ly prepare the method for caustic soda and carbon/sulfur calcium mixture, it is characterized in that described Sodium Sulphide waste residue is the product with barium sulfate by-product sodium sulfide method gained with the Sodium Sulphide waste residue.
3. as claimed in claim 1ly prepare the method for caustic soda and carbon/sulfur calcium mixture, it is characterized in that, before the configuration Sodium Sulphide waste residue suspension liquid, earlier described Sodium Sulphide waste residue is ground into 40 orders with the Sodium Sulphide waste residue.
4. as claimed in claim 1ly prepare the method for caustic soda and carbon/sulfur calcium mixture, it is characterized in that the described chemical reaction of step B is carrying out under slowly stirring with the Sodium Sulphide waste residue.
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115114A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing copper sulfide, calcium carbonate and sodium hydroxide from sodium sulfide waste |
| CN102115159A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing lead sulfide, calcium carbonate and sodium hydroxide by using alkali sulfide waste residues |
| CN102115175A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing manganese sulfide, calcium carbonate and sodium hydroxide from sodium sulphide waste |
| CN112238126A (en) * | 2020-09-27 | 2021-01-19 | 萍乡市新安环保工程有限公司 | Treatment method of desulfurization solid waste |
| CN113277544A (en) * | 2021-06-11 | 2021-08-20 | 浙江亚厦装饰股份有限公司 | Method for preparing color master batch by using dicyandiamide waste residues |
-
2010
- 2010-08-03 CN CN2010102440099A patent/CN101898771A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115114A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing copper sulfide, calcium carbonate and sodium hydroxide from sodium sulfide waste |
| CN102115159A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing lead sulfide, calcium carbonate and sodium hydroxide by using alkali sulfide waste residues |
| CN102115175A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing manganese sulfide, calcium carbonate and sodium hydroxide from sodium sulphide waste |
| CN102115159B (en) * | 2010-12-31 | 2012-11-07 | 谢善情 | Method for preparing lead sulfide, calcium carbonate and sodium hydroxide by using alkali sulfide waste residues |
| CN102115114B (en) * | 2010-12-31 | 2013-01-02 | 谢善情 | Method for preparing copper sulfide, calcium carbonate and sodium hydroxide from sodium sulfide waste |
| CN102115175B (en) * | 2010-12-31 | 2013-01-02 | 谢善情 | Method for preparing manganese sulfide, calcium carbonate and sodium hydroxide from sodium sulphide waste |
| CN112238126A (en) * | 2020-09-27 | 2021-01-19 | 萍乡市新安环保工程有限公司 | Treatment method of desulfurization solid waste |
| CN113277544A (en) * | 2021-06-11 | 2021-08-20 | 浙江亚厦装饰股份有限公司 | Method for preparing color master batch by using dicyandiamide waste residues |
| CN113277544B (en) * | 2021-06-11 | 2023-03-14 | 浙江亚厦装饰股份有限公司 | Method for preparing color master batch by using dicyandiamide waste residues |
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Application publication date: 20101201 |