CN103552991A - Novel continuous large dropwise adding technological method in sodium hydrosulfite production - Google Patents
Novel continuous large dropwise adding technological method in sodium hydrosulfite production Download PDFInfo
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- CN103552991A CN103552991A CN201310501782.2A CN201310501782A CN103552991A CN 103552991 A CN103552991 A CN 103552991A CN 201310501782 A CN201310501782 A CN 201310501782A CN 103552991 A CN103552991 A CN 103552991A
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Abstract
The invention discloses a novel continuous large dropwise adding technological method in sodium hydrosulfite production. An original technological method in sodium hydrosulfite production has the disadvantages that a backing material needs to be prepared, dry sodium formate needs to be added at twice, for the first time, mother liquid is mixed with a certain amount of dry sodium formate so as to serve as the backing material, and for the section time, a certain amount of water is mixed with the dry sodium formate, then the dry sodium formate is heated and molten by using vapor and is used for large dropwise addition. The novel continuous large dropwise adding technological method is characterized in that all dry sodium formate, mother liquid and water are added at a time so as to prepare suspension liquid, and the original interval 'large dropwise adding' is changed into the continuous 'large dropwise adding'. The novel continuous large dropwise adding technological method has the advantages that the production efficiency is improved by 200%, the stability of the quality of the sodium hydrosulfite product is aslo substantially improved, the production is easy to control, the particle size, the yield and the quality of the product are ensured, the working procedures of preparing the backing material and adjusting values are omitted, all the dry sodium formate, the mother liquid and the water are added at a time so as to prepare suspension liquid, the heating melting is not needed, the addition amount of the water is accurate, the using amount of vapor is reduced, and the time is saved. The production efficiency is substantially improved, and the quality and the consistency of the sodium hydrosulfite product are ensured.
Description
Technical field
The present invention relates to vat powder producing and manufacturing technique field, to enhance productivity, strengthening process scheme proportioning, the vat powder production technique scheme of Improving The Quality of Products.
Background technology
Vat powder, formal name used at school V-Brite B is a kind of crystallization white particle powder, molecular formula is Na2S2O4 odorlessness or sulfurous gas smell slightly.Vat powder is widely used in the reductibility dyeing of textile industry, and reductibility is cleaned, stamp and decolouring and be used as hair, silk, the bleaching of the fabrics such as nylon.While being used as reductive agent in printing and dyeing industry, it can guarantee printing quality, makes textiles bright in colour, unlikelyly by airborne oxygen, is oxidized.Thereby be called vat powder.Vat powder is in papermaking, in foodstuffs industry for paper pulp, syrup, the bleaching of the food such as maltose, separately can be used as medicine industry, the raw material of synthetic dyestuff also can be used as copperplate and analytical reagent etc.
Vat powder has extremely strong reductibility, meets oxygenant, and a small amount of water or absorption damp atmosphere can generate heat, and cause burning or blast, belong to four class spontaneously combustible, meet water and discharge poisonous sulfur dioxide gas;
The sodium formate method vat powder product of Anhui Jinbang Chemical Co., Ltd., is to introduce the design of chemical design institute, Tianjin the early 1990s to go into operation, and is dilute formic acid sodium processing method at that time, and production efficiency is lower, and cost is also high, produces only 3000 tons per year.Through the experience exploration of more than 20 years and repeatedly the current yearly capacity of significant technical reached 50,000 tons/year, and cost is low, quality Hao，Wei company has created huge economic benefit, has mainly experienced significant innovation of three phases in the middle of this.First, the nineties later stage changes the dilute formic acid sodium scheme of feeding intake, use dry product sodium formiate, (significantly reduce the usage quantity of water, feed concentration is significantly improved) with pyrosulphite, receive and replaced sodium hydroxide, (reactor product of sodium hydroxide and sulfurous gas) significantly improves product yield, and cost declines to a great extent.Subordinate phase significantly improves the utilization ratio of mother liquor for 2003 later, use direct ' dropping ' (former in sulfurous gas and methanol mixed liquid) of sulfur dioxide liquid further to improve product yield and reduced cost, (reduced the consumption of methyl alcohol, space is provided to increase mother liquor consumption) at present this kind scheme that feeds intake is that each sodium formate method vat powder factory owner of the whole nation flows production decision.Phase III, namely at present this was advanced in the world, and vat powder is up-to-date, and declares synthetic ' dropping ' processing method continuously of vat powder of patent.It is that vat powder producing and manufacturing technique approaches a kind of new processing method theory of the large production of automatization most so far.
Summary of the invention
Object of the present invention is just to provide the process program of a kind of vat powder synthetic " large dropping continuously ".
The present invention is achieved by the following technical solutions:
Explanation about mother liquor:
In vat powder production process, all reactions in the mixing solutions (alcohol water ratio is controlled between 78%-80%) of first alcohol and water of all starting material Sodium Pyrosulfites, sulfurous gas, sodium formiate.Synthesizing to make qualified vat powder suspension, go to again " four-in-one " dry post to carry out press filtration, washing, dry, thereby the operations such as mixing obtain qualified vat powder product, filtrate through press filtration is mother liquor, in mother liquor with a large amount of saturated starting material that do not participate in reaction, and the benefit that recycles mother liquor is, each input starting material are all the amounts of actual participation reaction, so just significantly improved the yield of product, except initial start-up, (with the configuration of first alcohol and water) mother liquor all recycles in whole production process, the amount that recycles in theory mother liquor more consumes just less
concrete grammar;
A kind of processing method of producing the large dropping of new type of continuous in vat powder, the former processing method that described vat powder is produced will be done bed material, dry product sodium formiate need to add at twice, with mother liquor, mix a certain amount of dry product sodium formiate for the first time and do bed material, heat up and adjust pH value with sulfurous gas, stand-by after temperature and pH value are transferred to needed numerical value, for the second time with a certain amount of water and heat up and melt remaining dry product sodium formiate and do ' dripping greatly ' and use with steam again; With by Sodium Pyrosulfite, sulfurous gas methanol suspension, to the reinforced process of synthesis reactor, be called " dripping greatly " after two kinds of materials add simultaneously, by inserting turning of bottom in " dripping greatly " still, expect that pipe forwards droplet to material and adds still, and carry out " little dropping " until material is qualified, and turned material " drip greatly ' still repeats to do bed material and large dropping process again; The processing method of described new type of continuous " dropping " is that the material pipe that turns that drips greatly still is blocked from bottom, retain 3-4 cube, allow and turn material that material all leaves fixed amount as bed material after " drip greatly " at every turn, coordinate again two cover feed proportioning systems to realize continuously " drip greatly ", and all dry product sodium formiates and mother liquor, water are all prepared to still and are configured to suspension disposable adding.
A kind of processing method of producing the large dropping of new type of continuous in vat powder, described former processing method needs the output of 3 ' dripping greatly ' stills, and continuous ' dripping greatly ' same output, only need ' dripping a greatly ' still, and increase a quantitative siphon pipe, make every batch of material ' drip greatly ' bed material that the appropriate feed liquid of complete reservation ' drips greatly ' as next batch, cancel and do the directly ' dropping greatly of the operations such as bed material, tone pitch, intensification.
advantage of the present invention is:
Process program of the present invention makes production efficiency improve 200%, the stability of vat powder quality product also significantly improves, produce easily control, guaranteed the granularity of product, yield, quality, omitted operations such as doing bed material, tone pitch, intensification, all dry product sodium formiates and mother liquor, water are all configured to suspension disposable adding, and do not need heat up to melt, and the input amount of accurate water has also been saved steam consumption and the time.Significantly improve production efficiency and guaranteed the quality of vat powder product and the consistence of product.
Embodiment
Embodiment 1
A kind of processing method of producing the large dropping of new type of continuous in vat powder, the former processing method that described vat powder is produced is wanted bed material, dry product sodium formiate need to add at twice, with mother liquor, mix a certain amount of dry product sodium formiate for the first time and do bed material, with a certain amount of water, with steam intensification, melt dry product sodium formiate more for the second time and do ' dripping greatly ' use; The processing method that described new type of continuous drips, for all dry product sodium formiates and mother liquor, water are all configured to suspension disposable adding, change former compartment and ' drips greatly ' as ' dripping greatly ' continuously.
A kind of processing method of producing the large dropping of new type of continuous in vat powder, described former processing method needs the output of 3 ' dripping greatly ' stills, and same output after use continuous ' dripping greatly ' scheme only needs ' dropping greatly ' still, and increase a quantitative siphon pipe, a set of feed proportioning system.Make every batch of material ' drip greatly ' bed material that the appropriate feed liquid of complete rear reservation ' drips greatly ' as next batch, the operations such as cancellation, tone pitch, intensification directly ' drip greatly '.
Claims (2)
1. a processing method of producing the large dropping of new type of continuous in vat powder, the former processing method that described vat powder is produced will be done bed material, dry product sodium formiate need to add at twice, with mother liquor, mix a certain amount of dry product sodium formiate for the first time and do bed material, heat up and adjust pH value with sulfurous gas, stand-by after temperature and pH value are transferred to needed numerical value, for the second time with a certain amount of water and heat up and melt remaining dry product sodium formiate and do ' dripping greatly ' and use with steam again; With by Sodium Pyrosulfite, sulfurous gas methanol suspension, to the reinforced process of synthesis reactor, be called " dripping greatly " after two kinds of materials add simultaneously, by inserting turning of bottom in " dripping greatly " still, expect that pipe forwards droplet to material and adds still, and carry out " little dropping " until material is qualified, and turned material " drip greatly ' still repeats to do bed material and large dropping process again; The processing method of described new type of continuous " dropping " is that the material pipe that turns that drips greatly still is blocked from bottom, retain 3-4 cube, allow and turn material that material all leaves fixed amount as bed material after " drip greatly " at every turn, coordinate again two cover feed proportioning systems to realize continuously " drip greatly ", and all dry product sodium formiates and mother liquor, water are all prepared to still and are configured to suspension disposable adding.
2. a kind of processing method of producing the large dropping of new type of continuous in vat powder according to claim 1, it is characterized in that described former processing method needs the output of 3 ' dripping greatly ' stills, and continuous ' dripping greatly ' same output, only need ' dripping a greatly ' still, and increase a quantitative siphon pipe, make every batch of material ' drip greatly ' bed material that the appropriate feed liquid of complete reservation ' drips greatly ' as next batch, cancel and do the operations such as bed material, tone pitch, intensification directly ' dropping greatly '.
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| CN201310501782.2A CN103552991B (en) | 2013-10-23 | 2013-10-23 | A kind of production in vat powder continuously big drips the processing method added |
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| CN103552991A true CN103552991A (en) | 2014-02-05 |
| CN103552991B CN103552991B (en) | 2016-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517103A (en) * | 2016-12-14 | 2017-03-22 | 赤峰瑞阳化工有限公司 | Sodium hydrosulfite synthesizing and continuous producing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3669895A (en) * | 1970-08-31 | 1972-06-13 | Virginia Chemicals Inc | Sodium hydrosulfite stabilization composition |
| CN101003366A (en) * | 2006-10-24 | 2007-07-25 | 烟台市金河保险粉厂有限公司 | Method for producing hydros by using epoxy compound as auxiliary agent |
| CN101049914A (en) * | 2007-04-06 | 2007-10-10 | 广东中成化工股份有限公司 | Method for manufacturing liquid sodium hyposulphite |
-
2013
- 2013-10-23 CN CN201310501782.2A patent/CN103552991B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3669895A (en) * | 1970-08-31 | 1972-06-13 | Virginia Chemicals Inc | Sodium hydrosulfite stabilization composition |
| CN101003366A (en) * | 2006-10-24 | 2007-07-25 | 烟台市金河保险粉厂有限公司 | Method for producing hydros by using epoxy compound as auxiliary agent |
| CN101049914A (en) * | 2007-04-06 | 2007-10-10 | 广东中成化工股份有限公司 | Method for manufacturing liquid sodium hyposulphite |
Non-Patent Citations (2)
| Title |
|---|
| 周杰: "焦亚硫酸钠法保险粉合成机理研究", 《中国氯碱》 * |
| 高虹: "提高保险粉生产中母液利用率的新工艺", 《安徽化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517103A (en) * | 2016-12-14 | 2017-03-22 | 赤峰瑞阳化工有限公司 | Sodium hydrosulfite synthesizing and continuous producing method |
| CN106517103B (en) * | 2016-12-14 | 2018-07-27 | 赤峰瑞阳化工有限公司 | Sodium hydrosulfite synthesizes continuous production method |
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Application publication date: 20140205 Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: GNSG ANHUI HONG SIFANG Co.,Ltd. Contract record no.: X2021340000008 Denomination of invention: A process of continuous large drop addition in the production of sodium hydrosulfite Granted publication date: 20160608 License type: Exclusive License Record date: 20210518 |
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Denomination of invention: A process of continuous large drop addition in the production of sodium hydrosulfite Effective date of registration: 20210527 Granted publication date: 20160608 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: GNSG ANHUI HONG SIFANG Co.,Ltd. Registration number: Y2021980004042 |
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