CN104098113B - The purifier apparatus of abraum salt and purifying process in a kind of glyphosate by product - Google Patents
The purifier apparatus of abraum salt and purifying process in a kind of glyphosate by product Download PDFInfo
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- CN104098113B CN104098113B CN201410322147.2A CN201410322147A CN104098113B CN 104098113 B CN104098113 B CN 104098113B CN 201410322147 A CN201410322147 A CN 201410322147A CN 104098113 B CN104098113 B CN 104098113B
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Abstract
The present invention relates to the purifier apparatus of abraum salt in a kind of glyphosate by product, be connected with whizzer after desalinization of soil by flooding or leaching groove via line pipeline is connected with Pulp pump, whizzer via line pipeline is connected with desalinization of soil by flooding or leaching groove again, so after the circulation of three grades of desalinization of soil by flooding or leaching grooves, Pulp pump, whizzer connects, whizzer via line pipeline is connected with change salt pond, changes salt pond and is connected with salt solution transferpump.From vapo(u)rization system abraum salt out, be sent in desalinization of soil by flooding or leaching groove, the salt being mixed into solid content 25% with upper level whizzer water is out starched, and pump in first-stage centrifugal machine with Pulp pump after stirring, the solid salt after centrifugal enters desalinization of soil by flooding or leaching groove, and desalinization of soil by flooding or leaching water returns desalinization of soil by flooding or leaching groove.Adopt same method, after three grades of washings, obtain the purified salt after purifying, its solid holdup is 60-70%.Abraum salt is converted into the raw material that can be used for downstream chlor-alkali industry by this technique, improves the economic benefit of abraum salt process, and meanwhile, the raw materials requirement amount that chlor-alkali industry is huge, also thoroughly solving in the past, abraum salt use range is narrow, and demand is little obtains drawback.
Description
Technical field
The present invention relates to the purifier apparatus of abraum salt in a kind of glyphosate by product, and utilize this equipment to carry out purifying to abraum salt, belong to the chemical field of glyphosate production.
Background technology
Glyphosate is a kind of excellent organic phosphates nonselective herbicide, it is the natural disposition highy potent herbicide that goes out after a kind of bud of efficient, low toxicity, low residue, broad weed-killing spectrum, in the Ye Shi world today, consumption is maximum, one of weedicide kind of the most violent also most market competitiveness of growth, this kind emerges rapidly along with the spread of global genetically modified crops at present.
China is current glyphosate production state maximum in the world and export State, and within 2013, national glyphosate output reaches 800,000 tons.And in the waste water produced in the production of glyphosate, sodium-chlor is wherein important integral part, and in average 1 ton of mother liquor, sodium chloride content is 15%, and produces 1 ton of glyphosate and can produce 6 tons of waste water, such calculating is got off, and annual domestic glyphosate industry produces sodium-chlor abraum salt and is about 900,000 tons.Along with the dynamics of domestic glyphosate industry to efforts at environmental protection constantly increases, the processing requirements of a large amount of industrial waste salt is also more and more higher, current glyphosate industry is inherent to first the industrial waste salt process in mother liquor being generally mode by evaporative crystallization, abraum salt is extracted from mother liquor, because this salt contains more organism and ammonia nitrogen impurity, poor quality, cannot directly use, therefore most of glyphosate production producer all takes following two kinds of methods to carry out reprocessing to abraum salt: one is directly outer selling, two is landfills after calcination, but all there is certain defective workmanship in these two kinds of methods in actually operating, have a strong impact on the production development of the environmental protection of glyphosate industry.
1. directly sell outward:
Namely the abraum salt extracted, directly externally sell in the mode of solid waste, main application is Snow Agent, this treatment process seems simple concerning enterprise, but added value is low, deficiency in economic performance, and Snow Agent uses by seasonal effect, market is unstable, very easily causes overstocked, affects the normal production order of enterprise.
2. landfill after calcination
Namely first by abraum salt by boiler calcination, remove the organic impuritys such as the ammonia nitrogen in abraum salt, then dig Di Chi and carry out landfill.This method need consume more fuel, and processing cost is very high, and in fact this method can only calculate temporary instead of process simultaneously, problem is at the moment put off backward.Along with the time constantly increases, enterprise will consume more fund and soil carrys out temporary increasing abraum salt, and this method is a kind of unsustainable Development patterns.
Summary of the invention
For overcoming above defective workmanship, our company utilizes the sodium-chlor in abraum salt and the impurity characteristic very large to the difference in solubility of saturated brine, with pure water as washing composition, through multistage washing, impurity in effective removal abraum salt, reasonably optimizing product processes, is applied to production chlor-alkali after realizing abraum salt process.Specific as follows:
A purifier apparatus for abraum salt in glyphosate by product, this equipment comprises the multistage desalinization of soil by flooding or leaching and centrifugal device, and be connected with whizzer after desalinization of soil by flooding or leaching trench bottom via line pipeline is connected with Pulp pump, whizzer via line pipeline is connected with desalinization of soil by flooding or leaching groove top again; Be connected with whizzer after desalinization of soil by flooding or leaching trench bottom via line pipeline is connected with Pulp pump, whizzer via line pipeline is connected with desalinization of soil by flooding or leaching groove top again; Be connected with whizzer after desalinization of soil by flooding or leaching trench bottom via line pipeline is connected with Pulp pump, whizzer via line pipeline is connected with change salt pond, changes bottom, salt pond via line pipeline and is connected with salt solution transferpump.
Described whizzer is also provided with the cable tubing to desalinization of soil by flooding or leaching groove, and whizzer is also provided with the cable tubing to desalinization of soil by flooding or leaching groove, and whizzer is also provided with the cable tubing to desalinization of soil by flooding or leaching groove.
Described change salt pond is provided with hot pure water water pipe, desalinization of soil by flooding or leaching groove is provided with cold water water pipe.
Described desalinization of soil by flooding or leaching groove via line pipeline is connected with desalinization of soil by flooding or leaching groove, and desalinization of soil by flooding or leaching groove via line pipeline is connected with desalinization of soil by flooding or leaching groove.
Described desalinization of soil by flooding or leaching groove, desalinization of soil by flooding or leaching groove, desalinization of soil by flooding or leaching groove, change are provided with stirring rake in salt pond.
Another object of the present invention is to utilize aforesaid device to carry out purifying to abraum salt, concrete technology is as follows:
1) will evaporate the centrifugal abraum salt solid that obtains from glyphosate mother solution adds in desalinization of soil by flooding or leaching groove 1-1, pure water is pumped in desalinization of soil by flooding or leaching groove 1-3, this pure water enters in desalinization of soil by flooding or leaching groove 1-2 through desalinization of soil by flooding or leaching groove 1-3 overflow, and overflow enters in desalinization of soil by flooding or leaching groove 1-1 again, pure water add-on to the abraum salt solid holdup controlled in desalinization of soil by flooding or leaching groove 1-3 is the crude salt salt slurry of 25-30%, start the stirring rake in desalinization of soil by flooding or leaching groove 1-1, be 20-30r/min in stir speed (S.S.), churning time is 30-40min, obtained salt slurry, this salt slurry is pumped into whizzer 3-1 through Pulp pump 2-1, after centrifuge dehydration, obtains solid salt.
2) the solid salt in step 1) is delivered to desalinization of soil by flooding or leaching groove 1-2, pure water is pumped in desalinization of soil by flooding or leaching groove 1-3, this pure water enters in desalinization of soil by flooding or leaching groove 1-2 through desalinization of soil by flooding or leaching groove 1-3 overflow, and the pure water add-on controlled in desalinization of soil by flooding or leaching groove 1-2 is 35-50% to consolidating salt solid holdup, obtained salt slurry, start the stirring rake in desalinization of soil by flooding or leaching groove 1-2, be 15-20r/min in stir speed (S.S.), churning time is 20-30min, obtained salt slurry, this salt slurry is pumped into whizzer 3-2 through Pulp pump 2-2, after centrifuge dehydration, obtains the solid salt be further purified.
3) by step 2) in solid salt deliver to desalinization of soil by flooding or leaching groove 1-3, toward desalinization of soil by flooding or leaching groove 1-3 in, pumping into pure water to consolidating salt solid holdup is 60-70%,
Obtained salt slurry, start the stirring rake in desalinization of soil by flooding or leaching groove 1-3, be 18-35r/min in stir speed (S.S.), churning time is 30-45min, obtained salt slurry, this salt slurry is pumped into whizzer 3-3 through Pulp pump 2-3, centrifuge dehydration obtains refined salt, by this refined salt feedingization salt pond 4, adds the hot pure water that temperature is 50 DEG C in change salt pond 4 simultaneously, refined brine is pumped into chlor-alkali plant, uses as raw material.
4) water out of the centrifuge described in enters desalinization of soil by flooding or leaching groove 1-3, water in desalinization of soil by flooding or leaching groove 1-3 fill it up with after through cable tubing overflow to desalinization of soil by flooding or leaching groove 1-2, water in desalinization of soil by flooding or leaching groove 1-2 fill it up with after through cable tubing overflow to desalinization of soil by flooding or leaching groove 1-1, the water in desalinization of soil by flooding or leaching groove 1-1 comes back to the step 1) glyphosate mother liquid evaporation eccentric phase and again evaporates in cable tubing overflow evaporation unit after filling it up with.This technique achieves device waste water and reuses, waste water, useless solid zero release.
By the scientific disposal to abraum salt, abraum salt is converted into the raw material that can be used for downstream chlor-alkali industry, improve the economic benefit of abraum salt process, simultaneously, the raw materials requirement amount that chlor-alkali industry is huge, also thoroughly solving in the past, abraum salt use range is narrow, and demand is little obtains drawback, and the healthy and stable development for glyphosate industry have found a reliable green road.
Accompanying drawing explanation
Fig. 1 is the purifier apparatus of abraum salt in glyphosate by product, and wherein 1-1,1-2,1-3 are desalinization of soil by flooding or leaching groove; 2-1,2-2,2-3 are Pulp pump; 3-1,3-2,3-3 are whizzer; 4, change salt pond; 5, salt solution transferpump.
Fig. 2 is the purifying process flow process of abraum salt in glyphosate by product.
Embodiment
embodiment 1
A purifier apparatus for abraum salt in glyphosate by product, bottom desalinization of soil by flooding or leaching groove 1-1, via line pipeline is connected with whizzer 3-1 after being connected with Pulp pump 2-1, and whizzer 3-1 via line pipeline is connected with desalinization of soil by flooding or leaching groove 1-2 top again; Bottom desalinization of soil by flooding or leaching groove 1-2, via line pipeline is connected with whizzer 3-2 after being connected with Pulp pump 2-2, and whizzer 3-2 via line pipeline is connected with desalinization of soil by flooding or leaching groove 1-3 top again; Bottom desalinization of soil by flooding or leaching groove 1-3, via line pipeline is connected with whizzer 3-3 after being connected with Pulp pump 2-3, and whizzer 3-3 via line pipeline is connected with change salt pond 4, changes bottom, salt pond via line pipeline and is connected with salt solution transferpump 5.
Described change salt pond 4 is provided with hot pure water water pipe, desalinization of soil by flooding or leaching groove 1-3 is provided with cold water water pipe.
Described desalinization of soil by flooding or leaching groove 1-3 via line pipeline is connected with desalinization of soil by flooding or leaching groove 1-2, and desalinization of soil by flooding or leaching groove 1-2 via line pipeline is connected with desalinization of soil by flooding or leaching groove 1-1.
Described desalinization of soil by flooding or leaching groove 1-1, desalinization of soil by flooding or leaching groove 1-2, desalinization of soil by flooding or leaching groove 1-2, change are provided with stirring rake in salt pond 4.
embodiment 2
1. mother liquid evaporation is centrifugal: glyphosate mother solution pump delivery, to vapo(u)rization system, controls flow 25m
3/ h, after the distillation of MVR system, concentrated salt solution enters in whizzer, per hourly produces 3-4 ton abraum salt.
2. abraum salt washing purifying: from vapo(u)rization system abraum salt out, enter in 1-1 desalinization of soil by flooding or leaching groove by scraper conveyor,
The salt being mixed into solid content 25 with upper level whizzer water is out starched, and pump in first-stage centrifugal machine with Pulp pump after stirring, the solid salt after centrifugal enters desalinization of soil by flooding or leaching groove 1-2, and desalinization of soil by flooding or leaching water returns desalinization of soil by flooding or leaching groove 1-1.Adopt same method, after three grades of washings, obtain the purified salt 3 tons after purifying, its solid holdup is 60%.
3. purified salt dissolves: from the purified salt of whizzer 3-3, by being delivered to of worm conveyor salt pond, add heat
Pure water, stirring and dissolving, is formulated as the refined brine of 300g/L, uses by pump delivery to chlor-alkali plant as raw material.
embodiment 3
1) will evaporate the centrifugal abraum salt solid that obtains from glyphosate mother solution adds in desalinization of soil by flooding or leaching groove 1-1, pure water is pumped in desalinization of soil by flooding or leaching groove 1-3, this pure water enters in desalinization of soil by flooding or leaching groove 1-2 through desalinization of soil by flooding or leaching groove 1-3 overflow, and overflow enters in desalinization of soil by flooding or leaching groove 1-1 again, pure water add-on to the abraum salt solid holdup controlled in desalinization of soil by flooding or leaching groove 1-3 is the crude salt salt slurry of 30%, start the stirring rake in desalinization of soil by flooding or leaching groove 1-1, be 20r/min in stir speed (S.S.), churning time is 30min, obtained salt slurry, this salt slurry is pumped into whizzer 3-1 through Pulp pump 2-1, after centrifuge dehydration, obtains solid salt.
2) the solid salt in step 1) is delivered to desalinization of soil by flooding or leaching groove 1-2) in desalinization of soil by flooding or leaching groove 1-3, pump into pure water, this pure water enters in desalinization of soil by flooding or leaching groove 1-2 through desalinization of soil by flooding or leaching groove 1-3 overflow, the pure water add-on controlled in desalinization of soil by flooding or leaching groove 1-2 is 45% to consolidating salt solid holdup, obtained salt slurry, starting the stirring rake in desalinization of soil by flooding or leaching groove 1-2, is 15r/min in stir speed (S.S.), churning time is 30min, obtained salt slurry, pumps into whizzer 3-2 by this salt slurry through Pulp pump 2-2, obtains the solid salt be further purified after centrifuge dehydration.
3) by step 2) in solid salt deliver to desalinization of soil by flooding or leaching groove 1-3, toward desalinization of soil by flooding or leaching groove 1-3 in, pump into pure water to salt solid holdup is admittedly 70%, and obtained salt is starched, start the stirring rake in desalinization of soil by flooding or leaching groove 1-3, be 35r/min in stir speed (S.S.), churning time is 45min, obtained salt slurry, this salt slurry is pumped into whizzer 3-3 through Pulp pump 2-3, centrifuge dehydration obtains refined salt, by this refined salt feedingization salt pond 4, adds the hot pure water that temperature is 50 DEG C in change salt pond 4 simultaneously, refined brine is pumped into chlor-alkali plant, uses as raw material.
4) water out of the centrifuge described in enters desalinization of soil by flooding or leaching groove 1-3, water in desalinization of soil by flooding or leaching groove 1-3 fill it up with after through cable tubing overflow to desalinization of soil by flooding or leaching groove 1-2, water in desalinization of soil by flooding or leaching groove 1-2 fill it up with after through cable tubing overflow to desalinization of soil by flooding or leaching groove 1-1, the water in desalinization of soil by flooding or leaching groove 1-1 comes back to the step 1) glyphosate mother liquid evaporation eccentric phase and again evaporates in cable tubing overflow evaporation unit after filling it up with.
embodiment 4
1) will evaporate the centrifugal abraum salt solid that obtains from glyphosate mother solution adds in desalinization of soil by flooding or leaching groove 1-1, pure water is pumped in desalinization of soil by flooding or leaching groove 1-3, this pure water enters in desalinization of soil by flooding or leaching groove 1-2 through desalinization of soil by flooding or leaching groove 1-3 overflow, and overflow enters in desalinization of soil by flooding or leaching groove 1-1 again, pure water add-on to the abraum salt solid holdup controlled in desalinization of soil by flooding or leaching groove 1-3 is the crude salt salt slurry of 25%, start the stirring rake in desalinization of soil by flooding or leaching groove 1-1, be 30r/min in stir speed (S.S.), churning time is 40min, obtained salt slurry, this salt slurry is pumped into whizzer 3-1 through Pulp pump 2-1, after centrifuge dehydration, obtains solid salt.
2) the solid salt in step 1) is delivered to desalinization of soil by flooding or leaching groove 1-2) in desalinization of soil by flooding or leaching groove 1-3, pump into pure water, this pure water enters in desalinization of soil by flooding or leaching groove 1-2 through desalinization of soil by flooding or leaching groove 1-3 overflow, the pure water add-on controlled in desalinization of soil by flooding or leaching groove 1-2 is 50% to consolidating salt solid holdup, obtained salt slurry, starting the stirring rake in desalinization of soil by flooding or leaching groove 1-2, is 20r/min in stir speed (S.S.), churning time is 30min, obtained salt slurry, pumps into whizzer 3-2 by this salt slurry through Pulp pump 2-2, obtains the solid salt be further purified after centrifuge dehydration.
3) by step 2) in solid salt deliver to desalinization of soil by flooding or leaching groove 1-3, toward desalinization of soil by flooding or leaching groove 1-3 in, pump into pure water to salt solid holdup is admittedly 68%, and obtained salt is starched, start the stirring rake in desalinization of soil by flooding or leaching groove 1-3, be 38r/min in stir speed (S.S.), churning time is 30min, obtained salt slurry, this salt slurry is pumped into whizzer 3-3 through Pulp pump 2-3, centrifuge dehydration obtains refined salt, by this refined salt feedingization salt pond 4, adds the hot pure water that temperature is 50 DEG C in change salt pond 4 simultaneously, refined brine is pumped into chlor-alkali plant, uses as raw material.
4) water out of the centrifuge described in enters desalinization of soil by flooding or leaching groove 1-3, water in desalinization of soil by flooding or leaching groove 1-3 fill it up with after through cable tubing overflow to desalinization of soil by flooding or leaching groove 1-2, water in desalinization of soil by flooding or leaching groove 1-2 fill it up with after through cable tubing overflow to desalinization of soil by flooding or leaching groove 1-1, the water in desalinization of soil by flooding or leaching groove 1-1 comes back to the step 1) glyphosate mother liquid evaporation eccentric phase and again evaporates in cable tubing overflow evaporation unit after filling it up with.
Claims (1)
1. the purifying process of abraum salt in glyphosate by product, is characterized in that, comprise following purification step:
1) will evaporate the centrifugal abraum salt solid that obtains from glyphosate mother solution adds in desalinization of soil by flooding or leaching groove one (1-1), pure water is pumped in desalinization of soil by flooding or leaching groove three (1-3), this pure water enters in desalinization of soil by flooding or leaching groove two (1-2) through desalinization of soil by flooding or leaching groove three (1-3) overflow, and overflow enters in desalinization of soil by flooding or leaching groove one (1-1) again, pure water add-on to the abraum salt solid holdup controlled in desalinization of soil by flooding or leaching groove three (1-3) is the crude salt salt slurry of 25-30%, start the stirring rake in desalinization of soil by flooding or leaching groove one (1-1), be 20-30r/min in stir speed (S.S.), churning time is 30-40min, obtained salt slurry, this salt slurry is pumped into whizzer one (3-1) through Pulp pump one (2-1), solid salt is obtained after centrifuge dehydration,
2) the solid salt in step 1) is delivered to desalinization of soil by flooding or leaching groove two (1-2), pure water is pumped in desalinization of soil by flooding or leaching groove three (1-3), this pure water enters in desalinization of soil by flooding or leaching groove two (1-2) through desalinization of soil by flooding or leaching groove three (1-3) overflow, the pure water add-on controlled in desalinization of soil by flooding or leaching groove two (1-2) is 35-50% to consolidating salt solid holdup, obtained salt slurry, start the stirring rake in desalinization of soil by flooding or leaching groove two (1-2), be 15-20r/min in stir speed (S.S.), churning time is 20-30min, obtained salt slurry, this salt slurry is pumped into whizzer two (3-2) through Pulp pump two (2-2), after centrifuge dehydration, obtains the solid salt be further purified;
3) by step 2) in solid salt deliver to desalinization of soil by flooding or leaching groove three (1-3), in desalinization of soil by flooding or leaching groove three (1-3), pumping into pure water to consolidating salt solid holdup is 60-70%, obtained salt slurry, start the stirring rake in desalinization of soil by flooding or leaching groove three (1-3), be 18-35r/min in stir speed (S.S.), churning time is 30-45min, obtained salt slurry, this salt slurry is pumped into whizzer three (3-3) through Pulp pump three (2-3), centrifuge dehydration obtains refined salt, by this refined salt feedingization salt pond (4), adds the hot pure water that temperature is 50 DEG C in change salt pond (4) simultaneously, refined brine is pumped into chlor-alkali plant, uses as raw material.
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| CN104828798B (en) * | 2015-05-20 | 2016-09-21 | 湖北泰盛化工有限公司 | In process of producing glyphosate by using glycine, crude brine extracts the device and method of phosphate dihydrate disodium hydrogen |
| CN107309251B (en) * | 2017-08-07 | 2023-06-02 | 安徽今朝环保科技有限公司 | Industrial slag salt harmless transferring and treating device and use method |
| CN110550793B (en) * | 2018-05-30 | 2022-02-11 | 杭州九清科技有限公司 | Purification process of salt in phosphate-containing wastewater |
| CN109704367A (en) * | 2018-12-27 | 2019-05-03 | 镇江江南化工有限公司 | A kind of glyphosate by-product Nacl process for refining and purifying |
| CN109848185B (en) * | 2019-03-11 | 2020-10-27 | 安徽华星化工有限公司 | Monosultap waste salt harmless treatment method |
| CN110451531A (en) * | 2019-08-16 | 2019-11-15 | 中国科学院过程工程研究所 | A kind of fine purification treatment process of industrial waste salt containing organic matter of desalinization of soil by flooding or leaching combination in-situ oxidation |
| CN110451530A (en) * | 2019-08-16 | 2019-11-15 | 中国科学院过程工程研究所 | A kind of fine purification treatment process of industrial waste salt containing organic matter of desalinization of soil by flooding or leaching combination ex situ oxidation |
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| CN201978550U (en) * | 2010-12-08 | 2011-09-21 | 潜江市仙桥化学制品有限公司 | High-function nitrate washing device for alkali making from brine and cyclone hydraulic separation |
| CN103342398A (en) * | 2013-07-17 | 2013-10-09 | 山东潍坊润丰化工有限公司 | Method for recovering high-purity organic salt from phosphorous-containing industrial wastewater |
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| CN201978550U (en) * | 2010-12-08 | 2011-09-21 | 潜江市仙桥化学制品有限公司 | High-function nitrate washing device for alkali making from brine and cyclone hydraulic separation |
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