CN103965126A - Preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate - Google Patents
Preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate Download PDFInfo
- Publication number
- CN103965126A CN103965126A CN201410219132.3A CN201410219132A CN103965126A CN 103965126 A CN103965126 A CN 103965126A CN 201410219132 A CN201410219132 A CN 201410219132A CN 103965126 A CN103965126 A CN 103965126A
- Authority
- CN
- China
- Prior art keywords
- acid
- preparation
- cyanuric acid
- chlorine
- absorption tower
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/30—Only oxygen atoms
- C07D251/36—Only oxygen atoms having halogen atoms directly attached to ring nitrogen atoms
Abstract
The invention provides a preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate. The method comprises the steps of introducing chlorine into a calcium cyanurate solution generated by mixing cyanuric acid, calcium carbonate and water to produce a trichloroisocyanuric acid product, and then introducing unreacted residual chlorine into a calcium cyanurate solution prepared in the other proportion to produce a dichloroisocyanurate product, thereby realizing co-production of trichloroisocyanuric acid and dichloroisocyanurat. According to the preparation method disclosed by the invention, application of a gas-liquid reaction in production of trichloroisocyanuric acid by a calcium carbonate method is achieved, the problems that a gas-solid reaction is incomplete and a production process is difficult to control existing in the prior art are solved, and industrial production of trichloroisocyanuric acid by the calcium carbonate method is realized. Nitrogen trichloride is not produced in the process, the safety of the production process is improved, the problem of the treatment of residual chlorine in tail gas is solved, effective utilization of resources is achieved and the production cost is reduced.
Description
Technical field
The present invention relates to the technical field of chlorinated isocyanurates, relate to specifically a kind of preparation method of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID.
Technical background
At present, the preparation method of trichloroisocyanuric acid is divided into two kinds, and one is that employing liquid caustic soda method is that liquid caustic soda passes into chlorine with cyanuric acid production trisodium cyanurate, generates trichloroisocyanuric acid; Another kind is to adopt calcium carbonate method to pass into after solid carbonate or solid carbonic acid hydrogen salt powder by chlorine, and mixed gas is introduced in cyanuric acid or its suspension and generated trichloroisocyanuric acid or DICHLOROISOCYANURIC ACID.When liquid caustic soda method is produced trichloroisocyanuric acid, the chlorine residue that utilizes liquid caustic soda to finish up back and forth in gas, generates chlorine bleach liquor, and cost is high, and after reclaiming, chlorine bleach liquor's price is low, easily decomposes sales difficulty; While utilizing calcium carbonate method to produce trichloroisocyanuric acid, main by controlling the consumption control target product of chlorine.Its shortcoming is that the reaction of gas and solid is even not as the reaction of gas and liquid, and easily control, and reaction end gas cannot be used alkali liquor absorption, because the great amount of carbon dioxide existing in tail gas can seriously be decomposed clorox.
The Patent Application Publication that Chinese Patent Application No. is 201110201431.0, publication number is CN102329275A " preparation method of a kind of trichloroisocyanuric acid and Surchlor GR 60 ", the method is first to prepare DICHLOROISOCYANURIC ACID, then add liquid caustic soda, prepare the Surchlor GR 60 aqueous solution, then carried out chlorination reaction and generated trichloroisocyanuric acid, although the method can reduce certain cost, fundamentally do not solve the processing of waste gas waste water in existing method.The Patent Application Publication that Chinese Patent Application No. is 201010254956.6, publication number is CN101899015A " a kind of processing method of producing chlorinated isocyanurates ", the method is that chlorine is passed through after solid carbonate or bicarbonate powder, mixed gas is incorporated into reaction in the suspension of cyanuric acid or cyanogen urea acid one sodium and generates trichloroisocyanuric acid and Surchlor GR 60, having relatively high expectations to powder raw material particle diameter when but chlorine is by solid carbonate or bicarbonate powder in the method, and the residence time of chlorine is wayward, and intermediate product Cl
2o poor stability, very easily decomposes, thereby strict to industrial condition, is difficult for forming scale operation.
Summary of the invention
The object of this invention is to provide a kind of preparation method of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID, the method is chlorine to be passed into cyanuric acid, calcium carbonate and water mix in the cyanuric acid calcium solution generating, produce trichloroisocyanuric acid product, after chlorine residue complete unreacted is passed in the cyanuric acid calcium solution of other ratios preparation, produce dichloro isocyanuric urine acid product, thereby realize the coproduction of trichloroisocyanuric acid and DICHLOROISOCYANURIC ACID.
Realizing the technical scheme that above-mentioned purpose of the present invention adopts is:
A preparation method for trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID, comprises the following steps:
(1) preparation of trichloroisocyanuric acid:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:1-1.5:10-20 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 18-25 DEG C, in the time that pH value is 3.0-3.5, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry trichloroisocyanuric acid product that to obtain;
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:0.5-0.9:5-10 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 27-32 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 1.8-2.3, in absorption tower, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain.
The additional technical feature that forms the preparation method of above-mentioned trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID also comprises:
Preferred embodiments of the present invention are: in the preparation of trichloroisocyanuric acid, when preparation cyanuric acid calcium solution, cyanuric acid, calcium carbonate and water weight ratio are 1:1.16:15.
Preferred embodiments of the present invention are: in the preparation of trichloroisocyanuric acid, the temperature of reactor is 20 DEG C.
Preferred embodiments of the present invention are: in the preparation of trichloroisocyanuric acid, pH is 3.2 o'clock, stops passing into chlorine.
Preferred embodiments of the present invention are: in the preparation of DICHLOROISOCYANURIC ACID, when preparation cyanuric acid calcium solution, cyanuric acid, calcium carbonate and water weight ratio are 1:0.78:8.
Preferred embodiments of the present invention are: in the preparation of DICHLOROISOCYANURIC ACID, the temperature on absorption tower is 30 DEG C.
Preferred embodiments of the present invention are: in the preparation of DICHLOROISOCYANURIC ACID, it is terminal to pH value 2.0 that cyanuric acid calcium liquid absorbs chlorine residue.
The further preferred scheme of the present invention is: the preparation method of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID, comprises the following steps:
(1) preparation of trichloroisocyanuric acid:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:1.16:15 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 20 DEG C, in the time that pH value is 3.2, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry trichloroisocyanuric acid product that to obtain;
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:0.78:8 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 30 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 2.0, in absorption tower, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain.
The preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID provided by the present invention compared with prior art, have the following advantages: the one, adopt chlorine and the reaction of cyanuric acid calcium solution to produce trichloroisocyanuric acid, realize trichloroisocyanuric acid is produced in gas liquid reaction application in calcium carbonate method, solve in prior art gas-solid reaction not thorough, the wayward problem of production technique, can realize suitability for industrialized production better; The 2nd, adopt calcium carbonate to replace sodium hydroxide production trichloroisocyanuric acid, even pass into after chlorine at neutral environment, can not produce nitrogen trichloride yet, avoid the danger of blasting, the security that has greatly improved production technique; The 3rd, utilize chlorine residue production DICHLOROISOCYANURIC ACID, solved trichloroisocyanuric acid produce in the processing problem of chlorine residue, reduced the harm to environment of tail gas containing chlorine, realized effective utilization of resource, reduced production cost.
Embodiment
A kind of preparation method of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID, the method is chlorine to be passed into cyanuric acid, calcium carbonate and water mix in the cyanuric acid calcium solution generating, produce trichloroisocyanuric acid product, after chlorine residue complete unreacted is passed in the cyanuric acid calcium solution of other ratios preparation, produce dichloro isocyanuric urine acid product, thereby realize the coproduction of trichloroisocyanuric acid and DICHLOROISOCYANURIC ACID.
The preparation method's of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID step is:
(1) preparation of trichloroisocyanuric acid:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:1-1.5:10-20 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 18-25 DEG C, in the time that pH value is 3.0-3.5, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry trichloroisocyanuric acid product that to obtain;
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:0.5-0.9:5-10 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 27-32 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 1.8-2.3, in absorption tower, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain.
The present invention is by adjusting the parameter of concrete cyanuric acid, calcium carbonate and water, control the temperature of reactor and the pH value of solution, make the reactivity of chlorine reach maximum, increase the yield of trichloroisocyanuric acid, and the chlorine content containing in tail gas reduces, tail gas is more easily processed, and following multiple preferred version is provided.
Embodiment 1
(1) preparation of trichloroisocyanuric acid:
By cyanuric acid 500kg, calcium carbonate 500kg and water 5000kg are mixed with cyanuric acid calcium solution in batching kettle, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 20 DEG C, in the time that pH value is 3.0, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, by centrifuge dehydration, press filtration, be dried to obtain trichloroisocyanuric acid product, available chlorine content 91.2%, yield is in cyanuric acid 91%.
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid 100 kg, calcium carbonate 50kg and water 500kg are mixed with to cyanuric acid calcium solution by being placed in batching kettle, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 27 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 1.8, in spray absorber, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain, yield is in cyanuric acid 58%.
Embodiment 2
(1) preparation of trichloroisocyanuric acid:
By cyanuric acid 500 kg, calcium carbonate 750 kg and water 10000 kg are placed in batching kettle and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, pass into the speed of chlorine for first quick and back slow, control temperature of reaction kettle at 25 DEG C, in the time that pH value is 3.5, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, by centrifuge dehydration, press filtration, be dried to obtain trichloroisocyanuric acid product, available chlorine content 91.0%, yield is in cyanuric acid 90%.
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid 100 kg, calcium carbonate 90kg and water 1000kg are mixed with to cyanuric acid calcium solution by being placed in batching kettle, the cyanuric acid calcium solution preparing is sent in spray absorber, the chlorine residue waste gas producing in step (1) reaction process is introduced to spray absorber to be absorbed, control spray absorber temperature at 32 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 2.0, in spray absorber, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain, yield is in cyanuric acid 60%.
Embodiment 3
(1) preparation of trichloroisocyanuric acid:
By cyanuric acid 500kg, calcium carbonate 580kg and water 7500kg are mixed with cyanuric acid calcium solution in batching kettle, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 20 DEG C, in the time that pH value is 3.2, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, by centrifuge dehydration, press filtration, be dried to obtain trichloroisocyanuric acid product, available chlorine content 91.5%, yield is in cyanuric acid 95%.；
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid 100 kg, calcium carbonate 78kg and water 800kg are mixed with to cyanuric acid calcium solution by being placed in batching kettle, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 30 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 2.0, in spray absorber, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain, yield is in cyanuric acid 55%.
Claims (8)
1. a preparation method for trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID, is characterized in that: comprise the following steps:
(1) preparation of trichloroisocyanuric acid:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:1-1.5:10-20 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 18-25 DEG C, in the time that pH value is 3.0-3.5, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry trichloroisocyanuric acid product that to obtain;
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:0.5-0.9:5-10 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 27-32 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 1.8-2.3, in absorption tower, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain.
2. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: when the described preparation cyanuric acid calcium solution of step (1), cyanuric acid, calcium carbonate and water weight ratio are 1:1.16:15.
3. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: the temperature of the reactor described in step (1) is 20 DEG C.
4. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: the described pH of step (1) is 3.2 o'clock, stops passing into chlorine.
5. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: when the described preparation cyanuric acid calcium solution of step (2), cyanuric acid, calcium carbonate and water weight ratio are 1:0.78:8.
6. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: the temperature on the absorption tower described in step (2) is 30 DEG C.
7. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: it is terminal to pH value 2.0 that the described cyanuric acid calcium liquid of step (2) absorbs chlorine residue.
8. the preparation method of a kind of trichloroisocyanuric acid coproduction DICHLOROISOCYANURIC ACID according to claim 1, is characterized in that: comprise the following steps:
(1) preparation of trichloroisocyanuric acid:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:1.16:15 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in chlorination reaction still, at the bottom of still, pass into chlorine under agitation reaction, control temperature of reaction kettle at 20 DEG C, in the time that pH value is 3.2, stop passing into chlorine, the chlorine residue waste gas producing in process is blown in absorption tower by pressurized air from still top, in chlorination reaction still, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry trichloroisocyanuric acid product that to obtain;
(2) preparation of DICHLOROISOCYANURIC ACID:
Cyanuric acid, calcium carbonate and water are placed in to batching kettle by weight 1:0.78:8 and are mixed with cyanuric acid calcium solution, the cyanuric acid calcium solution preparing is sent in absorption tower, the chlorine residue waste gas producing in step (1) reaction process is introduced to absorption tower to be absorbed, control absorption tower temperature at 30 DEG C, be terminal when cyanuric acid calcium liquid absorbs chlorine residue to pH value 2.0, in absorption tower, material is put into crystallization kettle and is carried out crystallization, through centrifuge dehydration, press filtration, the dry dichloro isocyanuric urine acid product that to obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219132.3A CN103965126A (en) | 2013-11-01 | 2014-05-23 | Preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310531227.4 | 2013-11-01 | ||
| CN201310531227 | 2013-11-01 | ||
| CN201410219132.3A CN103965126A (en) | 2013-11-01 | 2014-05-23 | Preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103965126A true CN103965126A (en) | 2014-08-06 |
Family
ID=51235184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410219132.3A Pending CN103965126A (en) | 2013-11-01 | 2014-05-23 | Preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103965126A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909388A (en) * | 2015-05-12 | 2015-09-16 | 山东兴达化工有限公司 | Research of information automation production technology for combined production of cyanuric acid and ammonium sulfate, and synthesis and research of chloro derivative |
| CN105037286A (en) * | 2015-05-12 | 2015-11-11 | 山东兴达化工有限公司 | Researching and application of cyanuric acid derivative ecological environment-friendly zero-emission new process |
| CN110407760A (en) * | 2018-04-26 | 2019-11-05 | 荆州市欣祥瑞化工有限公司 | A kind of preparation method of sym-closene |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898222A (en) * | 1974-07-05 | 1975-08-05 | Dow Chemical Co | Process for preparing trichloroisocyanuric acid |
| CN1109053A (en) * | 1994-12-30 | 1995-09-27 | 南京师范大学 | Combination process for producing sodium dichloroisocyanurate and trichloroisocyanuric acid |
| CN1380290A (en) * | 2002-03-20 | 2002-11-20 | 唐银华 | Technological process for producing chlorinated isocyanuric acid |
| CN101899015A (en) * | 2010-08-11 | 2010-12-01 | 唐银华 | Process for producing trichloroisocyanuric acid by using calcium carbonate |
| CN102206193A (en) * | 2011-04-19 | 2011-10-05 | 菏泽华意化工有限公司 | Preparation method for trichloroisocyanuric acid |
| CN102329275A (en) * | 2011-07-19 | 2012-01-25 | 鄄城康泰化工有限公司 | Preparation methods of trichloroisocyanuric acid and sodium dichloro isocyanurate |
| CN102516188A (en) * | 2011-12-12 | 2012-06-27 | 河北克尔化工有限公司 | Preparation method of high-yield cyanuric acid and its derivatives sodium dichloroisocyanurate and trichloroisocyanuric acid |
| CN103316621A (en) * | 2013-07-22 | 2013-09-25 | 河北冀衡化学股份有限公司 | Method for preparing trichloroisocyanuric acid by using pipeline reactor |
| CN103772306A (en) * | 2014-01-24 | 2014-05-07 | 安徽中元化工集团有限公司 | Production method of sodium dichloro isocyanurate |
-
2014
- 2014-05-23 CN CN201410219132.3A patent/CN103965126A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898222A (en) * | 1974-07-05 | 1975-08-05 | Dow Chemical Co | Process for preparing trichloroisocyanuric acid |
| CN1109053A (en) * | 1994-12-30 | 1995-09-27 | 南京师范大学 | Combination process for producing sodium dichloroisocyanurate and trichloroisocyanuric acid |
| CN1380290A (en) * | 2002-03-20 | 2002-11-20 | 唐银华 | Technological process for producing chlorinated isocyanuric acid |
| CN101899015A (en) * | 2010-08-11 | 2010-12-01 | 唐银华 | Process for producing trichloroisocyanuric acid by using calcium carbonate |
| CN102206193A (en) * | 2011-04-19 | 2011-10-05 | 菏泽华意化工有限公司 | Preparation method for trichloroisocyanuric acid |
| CN102329275A (en) * | 2011-07-19 | 2012-01-25 | 鄄城康泰化工有限公司 | Preparation methods of trichloroisocyanuric acid and sodium dichloro isocyanurate |
| CN102516188A (en) * | 2011-12-12 | 2012-06-27 | 河北克尔化工有限公司 | Preparation method of high-yield cyanuric acid and its derivatives sodium dichloroisocyanurate and trichloroisocyanuric acid |
| CN103316621A (en) * | 2013-07-22 | 2013-09-25 | 河北冀衡化学股份有限公司 | Method for preparing trichloroisocyanuric acid by using pipeline reactor |
| CN103772306A (en) * | 2014-01-24 | 2014-05-07 | 安徽中元化工集团有限公司 | Production method of sodium dichloro isocyanurate |
Non-Patent Citations (1)
| Title |
|---|
| 董雁如等: "碳酸钙-两步法制备三氯异氰尿酸研究", 《濮阳职业技术学院学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909388A (en) * | 2015-05-12 | 2015-09-16 | 山东兴达化工有限公司 | Research of information automation production technology for combined production of cyanuric acid and ammonium sulfate, and synthesis and research of chloro derivative |
| CN105037286A (en) * | 2015-05-12 | 2015-11-11 | 山东兴达化工有限公司 | Researching and application of cyanuric acid derivative ecological environment-friendly zero-emission new process |
| CN110407760A (en) * | 2018-04-26 | 2019-11-05 | 荆州市欣祥瑞化工有限公司 | A kind of preparation method of sym-closene |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102502708B (en) | Preparation method for preparing alkali metal or alkali earth metal cyanide with high purity and high yield | |
| CN103965126A (en) | Preparation method for co-production of trichloroisocyanuric acid and dichloroisocyanurate | |
| CN103950957A (en) | Process method for preparing magnesium hydroxide from magnesium sulfate | |
| CN103896808A (en) | Method of preparing azodiisobutyronitrile | |
| CN1948236B (en) | Method of producing potassium ammonium sulfate compound fertilizer using potassium containing rock | |
| CN101519383A (en) | Process for jointly producing cyanuramide, sodium carbonate and ammonium chloride by using carbamide | |
| CN103980214B (en) | The processing method of waste gas waste water in a kind of sym-closene production process | |
| CN104909489B (en) | A kind of process for producing of trichloro-isocyanuric acid sewage water treatment method | |
| CN103112875B (en) | Process for preparing agricultural potassium nitrate by utilizing potassium-enriched rock | |
| CN110437169B (en) | Preparation method of sodium dichloroisocyanurate | |
| CN106395861A (en) | Method for producing cyanogen chloride by using tubular reactor | |
| CN104262991B (en) | A kind of method of semi-continuous production white dyes | |
| CN101186595B (en) | Method for preparing sodium dichloro isocyanurate | |
| CN110902696A (en) | Preparation method of cyanogen chloride | |
| CN105947985B (en) | A kind of chlorine dioxide preparation method of recyclable sodium acid sulfate | |
| CN105037286A (en) | Researching and application of cyanuric acid derivative ecological environment-friendly zero-emission new process | |
| CN101559960B (en) | Method for removing excessive hydrofluosilicic acid in process of producing potassium sulfate by low-temperature decomposing of potassium feldspar by hydrofluosilicic acid | |
| CN101759554B (en) | Method for treating and utilizing potassium hydrogen tartrate mother liquor | |
| CN104085904A (en) | Method for decomposing sodium hypochlorite | |
| CN108727297A (en) | A kind of hydrogen peroxide oxidation one-step synthesis technique of rubber accelerator dibenzothiazyl disulfide | |
| CN105645442A (en) | Process for jointly producing melamine, sodium carbonate and ammonium chloride by using urea | |
| CN111777091B (en) | Method for preparing calcium sulfate and hydrogen chloride based on pivalic acid byproduct waste acid and epichlorohydrin wastewater | |
| CN105523565B (en) | Vapor assisted Solid-state converts the method for preparing W molecular sieves | |
| CN103935971A (en) | Green cycle production novel method of hydrazine hydrate, hydrazonium salts, and ADC foaming agent | |
| JPH0383802A (en) | Production of chlorine dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140806 |
|
| RJ01 | Rejection of invention patent application after publication |