CN113264825A - New process for producing sodium fatty acid by saponification of grease - Google Patents
New process for producing sodium fatty acid by saponification of grease Download PDFInfo
- Publication number
- CN113264825A CN113264825A CN202110689813.6A CN202110689813A CN113264825A CN 113264825 A CN113264825 A CN 113264825A CN 202110689813 A CN202110689813 A CN 202110689813A CN 113264825 A CN113264825 A CN 113264825A
- Authority
- CN
- China
- Prior art keywords
- sodium
- saponification
- fatty acid
- sio
- grease
- 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
- 239000011734 sodium Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 29
- 238000007127 saponification reaction Methods 0.000 title claims abstract description 25
- 239000004519 grease Substances 0.000 title claims abstract description 24
- 235000014113 dietary fatty acids Nutrition 0.000 title claims description 24
- 239000000194 fatty acid Substances 0.000 title claims description 24
- 229930195729 fatty acid Natural products 0.000 title claims description 24
- -1 sodium fatty acid Chemical class 0.000 title claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 126
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- KEZYHIPQRGTUDU-UHFFFAOYSA-N 2-[dithiocarboxy(methyl)amino]acetic acid Chemical compound SC(=S)N(C)CC(O)=O KEZYHIPQRGTUDU-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910020489 SiO3 Inorganic materials 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 13
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000004111 Potassium silicate Substances 0.000 claims description 11
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 11
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 11
- 235000019353 potassium silicate Nutrition 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910020451 K2SiO3 Inorganic materials 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 238000003556 assay Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004821 distillation Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C1/00—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids
- C11C1/02—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids from fats or fatty oils
- C11C1/025—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids from fats or fatty oils by saponification and release of fatty acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention relates to a new process for producing sodium aliphatate by saponification of oil and fat. Sodium hydroxide NaOH is added into a mixer after being measured according to the saponification value of the grease, and the dissolved sodium metasilicate pentahydrate Na is added2SiO3·5H2O was metered into the mixer. And (3) mixing to completely dissolve the sodium hydroxide NaOH, and determining the using amount of the grease according to the using amount of the sodium hydroxide NaOH when the grease is added in proportion. The materials are fully mixed and reacted, and after the reaction is finished, the mixture is molded into sodium aliphatate particles (blocks) by a molding machine. The invention can effectively reduce the equipment involved in processing, thereby reducing energy consumption, reducing cost, having no waste water, shortening time consumption and improving production efficiency.
Description
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to a novel process for producing sodium fatty acid by saponification of grease.
Background
The prior art for producing sodium fatty acid particles (blocks) by grease mainly comprises the following two types:
1. the grease and liquid sodium hydroxide NaOH (with the concentration of 32 percent) are mixed and saponified by a homogenizer according to a certain proportion, and then are circularly saponified, aged, adjusted, vacuum-dried and molded by the homogenizer to produce the sodium fatty acid particles (blocks).
2. And (3) a hydrolysis distillation process: hydrolyzing the grease at high temperature, distilling out fatty acid, neutralizing the fatty acid with liquid NaOH (32% concentration), vacuum drying, and molding to produce sodium fatty acid particles (blocks).
In both processes, grease or fatty acid and liquid sodium hydroxide NaOH (with the concentration of 32%) react in a liquid phase, so that excessive water can be brought into the processes by adding the liquid sodium hydroxide NaOH (with the concentration of 32%), the excessive water is evaporated by adding a vacuum system and a drying system, the saponification reaction time is 4 hours in general, waste water is generated after the evaporated water is cooled, and the processes are long in process route, multiple in equipment, large in energy consumption, multiple in operators, complex, high in production cost and small in amount of waste water to be treated in the production process.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the novel process for producing the sodium aliphatate by saponifying the grease, which can effectively reduce equipment involved in processing, thereby reducing energy consumption and cost, having no waste water, shortening time consumption and improving production efficiency.
In order to achieve the purpose, the invention is realized by the following technical scheme: the new process for producing the sodium fatty acid by saponification of the grease is characterized by comprising the following specific steps of:
(1) adding sodium hydroxide NaOH into a mixer after metering according to the saponification value of the grease;
(2) sodium metasilicate pentahydrate Na is mixed by water with the temperature of 60 DEG C2SiO3·5H2Adding the dissolved O into a mixer in proportion;
(3) mixing, dissolving sodium hydroxide NaOH completely, adding oil in proportion, and repeatedly stirring;
(4) fully mixing the substances for reaction until the reaction is finished;
(5) after the reaction is completed, the mixture is formed into fatty acid sodium particles (blocks) by a forming machine.
Further, in the step (1), sodium hydroxide NaOH with the concentration of 99.0% is adopted.
Further, sodium metasilicate pentahydrate Na in step (2)2SiO3·5H2O may be potassium silicate K2SiO3Or sodium silicate Na2SiO3Instead.
Further, the reaction time in the step (4) is about 40 minutes.
Further, when the grease is added in proportion in the step (3), the using amount of the grease is determined according to the using amount of the sodium hydroxide NaOH.
Further, the saponification rate of the sodium fatty acid granules (blocks) obtained in the step (4) is qualified when the sampling and testing result reaches 99.5%.
By the scheme, the invention at least has the following advantages:
the process route is short: due to the optimization of the process method, the equipment required by the production line is greatly reduced, the process route is effectively reduced, and the production speed is greatly improved.
The equipment is few: the new method only needs to add sodium metasilicate pentahydrate Na in the reaction process2SiO3·5H2O, potassium silicate K2SiO3Or sodium silicate Na2SiO3The production can be completed by one of the two methods, the added water in the reaction is less, the equipment required by the subsequent drying process is reduced, the required production equipment is less than the old technology, and the investment of production preparation is reduced.
Thirdly, making the method simple: and because production equipment is reduced, links of the production line needing to be operated are reduced, and the operation links are fewer and easier to control.
Fourthly, less manpower is required: and the reduction of production equipment is benefited, the number of workers required by the production line is correspondingly reduced, and the cost of workers is effectively reduced.
Land occupation is small: because the equipment required by production is effectively reduced, less floor area is inevitably brought, and the same factory building can accommodate a plurality of sets of production equipment required by the method, thereby greatly improving the unit productivity.
Sixthly, the energy consumption is low: because the equipment required by production is effectively reduced, the advantage of greatly reducing production energy consumption is naturally brought, and the yield can be effectively improved under the same energy consumption.
The cost is low: the optimized process can effectively reduce equipment investment, greatly reduce equipment cost required by factory operation, and effectively reduce preparation cost in the early stage of production.
And no waste water. The method only needs a small amount of water to participate in the reaction process, uses little water in the reaction process, can remove extra water in the product without redundant equipment, does not need to treat a small amount of wastewater like the old process, further reduces the sewage treatment equipment required to be constructed for environment-friendly wastewater treatment in the production and construction process, and greatly reduces the production cost.
Drawings
FIG. 1 is a flow chart of a new process for producing sodium fatty acid by saponification of oil and fat;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the context of the present invention will be understood in a specific context to those skilled in the art.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
As shown in figure 1, the new process for producing sodium fatty acid by saponification of oil and fat is realized by the following technical scheme in order to realize the purpose: the new process for producing the sodium fatty acid by saponification of the grease is characterized by comprising the following specific steps of:
(1) adding sodium hydroxide NaOH into a mixer after metering according to the saponification value of the grease;
(2) sodium metasilicate pentahydrate Na is mixed by water with the temperature of 60 DEG C2SiO3·5H2Adding the dissolved O into a mixer in proportion;
(3) mixing, dissolving sodium hydroxide NaOH completely, adding oil in proportion, and repeatedly stirring;
it should be noted that: the raw materials are more fully mixed in the stirring process in the reaction process, so that the raw materials are convenient to react.
(4) Fully mixing the substances for reaction, and after the reaction is finished;
(5) after the reaction is completed, the mixture is formed into fatty acid sodium particles (blocks) by a forming machine.
In the step (1), 99.0% NaOH should be used.
Sodium metasilicate pentahydrate Na in step (2)2SiO3·5H2O may be potassium silicate K2SiO3Or sodium silicate Na2SiO3Instead.
The reaction time in step (4) is about 40 minutes.
And (4) when the grease is added in the step (3) in proportion, determining the using amount of the grease according to the using amount of the sodium hydroxide NaOH.
And (4) sampling and testing the sodium fatty acid particles (blocks) in the step (4) until the saponification rate reaches 99.5 percent, namely, the sodium fatty acid particles (blocks) are qualified.
It should be noted that: the process route does not add sodium metasilicate pentahydrate Na2SiO3·5H2O, potassium silicate K2SiO3Or sodium silicate Na2SiO3In the case of a solution, the reaction speed is very slow, generally 8 hours are required to complete the reaction, and waste water is generated at the same time, which causes additional cost for enterprises.
The process route mainly discovers that sodium metasilicate pentahydrate Na is added2SiO3·5H2O, potassium silicate K2SiO3Or sodium silicate Na2SiO3The solution can react quickly.
Sodium metasilicate pentahydrate Na2SiO3·5H2O, potassium silicate K2SiO3Or sodium silicate Na2SiO3The solution can also be sodium metasilicate pentahydrate Na2SiO3·5H2O, potassium silicate K2SiO3Or sodium silicate Na2SiO3Adding water to dissolve the mixture to prepare the water-soluble acrylic acid.
Has the advantages that: compared with the old hydrolysis distillation process, the method only needs to add sodium metasilicate pentahydrate Na2SiO3·5H2O, potassium silicate K2SiO3Or sodium silicate Na2SiO3Can save adjustment cauldron, isotropic symmetry and vacuum hole desiccator and vacuum system, effectively reduce technology circuit length, required equipment quantity to can effectively reduce operating personnel, energy consumption and subsequent waste water treatment cost's input, greatly reduced manufacturing cost, the industrialization volume of being convenient for produces sodium aliphatate.
The specific embodiment is as follows:
(1) dissolving sodium metasilicate pentahydrate Na by water2SiO3·5H2And (3) O reaction:
adding 150kg of sodium hydroxide NaOH into 5m3MixingA machine;
② 150kg of sodium metasilicate pentahydrate Na dissolved by 70kg of water at 60 DEG C2SiO3·5H2Adding O to 5m3A mixer;
mixing and stirring for 10 minutes;
fourthly, 1050kg of grease is added into 5m3The mixer is stirred for 40 minutes, and the saponification rate of the sample assay reaches 99.5 percent, namely the product is qualified;
using a conveyor (belt conveyer) to convey the mixture to a forming machine to form the product of the sodium aliphatate particles.
(2) Dissolving potassium silicate K by water2SiO3(concentration 40%) reaction:
adding 150kg of sodium hydroxide NaOH into 5m3A mixer;
② 150kg of potassium silicate K at 60 DEG C2SiO3(40%) of the solution was added 5m3A mixer;
mixing and stirring for 10 minutes;
fourthly, 1050kg of grease is added into 5m3The mixer is stirred for 40 minutes, and the saponification rate of the sample assay reaches 99.5 percent, namely the product is qualified;
using a conveyor (belt conveyer) to convey the mixture to a forming machine to form the product of the sodium aliphatate particles.
(3) Dissolving sodium silicate Na by water2SiO3(concentration 40%) reaction:
adding 150kg of sodium hydroxide NaOH into 5m3A mixer;
② 150kg of water with the temperature of 60 ℃ for dissolving sodium silicate Na2SiO3(40%) of the solution was added 5m3A mixer;
mixing and stirring for 10 minutes;
fourthly, 1050kg of grease is added into 5m3The mixer is stirred for 40 minutes, and the saponification rate of the sample assay reaches 99.5 percent, namely the product is qualified;
using a conveyor (belt conveyer) to convey the mixture to a forming machine to form the product of the sodium aliphatate particles.
Claims (6)
1. The new process for producing the sodium fatty acid by saponification of the grease is characterized by comprising the following specific steps of:
(1) adding sodium hydroxide NaOH into a mixer after metering according to the saponification value of the grease;
(2) sodium metasilicate pentahydrate Na is mixed by water with the temperature of 60 DEG C2SiO3·5H2Adding the dissolved O into a mixer in proportion;
(3) mixing, dissolving sodium hydroxide NaOH completely, adding oil in proportion, and repeatedly stirring;
(4) fully mixing the substances for reaction until the reaction is finished;
(5) after the reaction is completed, the mixture is formed into fatty acid sodium particles (blocks) by a forming machine.
2. The novel process for producing sodium fatty acid by saponification of oil and fat as claimed in claim 1, wherein the sodium hydroxide NaOH with a concentration of 99.0% is used in the step (1).
3. The novel process for producing sodium fatty acid by saponification of oil and fat as claimed in claim 1, wherein sodium metasilicate pentahydrate Na in step (2)2SiO3·5H2O may be potassium silicate K2SiO3Or sodium silicate Na2SiO3Instead.
4. The process for producing sodium fatty acid by saponification of oil and fat as claimed in claim 1, wherein the reaction time in step (4) is about 40 minutes.
5. The novel process for producing sodium fatty acid by saponification of oil and fat as claimed in claim 2, wherein the amount of oil and fat used is determined according to the amount of sodium hydroxide (NaOH) used when the oil and fat is added in proportion in step (3).
6. The process for producing sodium aliphatate by saponification of oil and fat as claimed in claim 1, wherein the sodium aliphatate particles (blocks) obtained in step (4) are sampled and tested for a saponification rate of 99.5% and then qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689813.6A CN113264825A (en) | 2021-06-22 | 2021-06-22 | New process for producing sodium fatty acid by saponification of grease |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689813.6A CN113264825A (en) | 2021-06-22 | 2021-06-22 | New process for producing sodium fatty acid by saponification of grease |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113264825A true CN113264825A (en) | 2021-08-17 |
Family
ID=77235575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110689813.6A Pending CN113264825A (en) | 2021-06-22 | 2021-06-22 | New process for producing sodium fatty acid by saponification of grease |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113264825A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010039323A (en) * | 1999-10-29 | 2001-05-15 | 박광진 | Sodium Sesqui Silicate for Saponifier and Soap Manufacturing Method Used the Same |
| CN103319307A (en) * | 2013-06-27 | 2013-09-25 | 浙江工业大学 | Method for preparing sodium soap |
-
2021
- 2021-06-22 CN CN202110689813.6A patent/CN113264825A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010039323A (en) * | 1999-10-29 | 2001-05-15 | 박광진 | Sodium Sesqui Silicate for Saponifier and Soap Manufacturing Method Used the Same |
| CN103319307A (en) * | 2013-06-27 | 2013-09-25 | 浙江工业大学 | Method for preparing sodium soap |
Non-Patent Citations (4)
| Title |
|---|
| 王洪荣等: "棕榈油脂肪酸钙制备工艺优化研究", 扬州大学学报(农业与生命科学版), vol. 32, no. 4, pages 70 - 77 * |
| 詹益兴: "《精细化工新产品 第1集》", 30 June 2007, 北京：科学技术文献出版社, pages: 4 * |
| 郑竟成等: "《中学化学单质和化合物性质词典》", 30 September 2001, 武汉：湖北科学技术出版社, pages: 135 - 140 * |
| 陈红军等: "利用动物油脂生产硬脂酸油酸工艺改进研究", 塔里木农垦大学学报, vol. 14, no. 2, pages 23 - 26 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105585179B (en) | A kind of aluminium section bar plant demoulding devil liquor recovery utilizes method | |
| CN111233360A (en) | Method for preparing geopolymer-based recycled aggregate from micro-fine particle copper tailings | |
| CN108622921B (en) | Preparation method of high-temperature-resistant low-sodium aluminum hydroxide | |
| CN105001357A (en) | Continuous preparation method for catalytically synthesizing polyvinyl butyral resin through organic acid | |
| CN102583675A (en) | Method for producing poly-silicone sulfuric acid rare earth ferroaluminum with Byer process red mud and sludge containing rear earth | |
| CN113264825A (en) | New process for producing sodium fatty acid by saponification of grease | |
| CN102976645B (en) | A kind of pretreatment process of phosphogypsum for production of thistle board | |
| CN101863482A (en) | Method for continuously preparing white carbon black and ammonium fluoride by carrying out fluosilicic acid ammoniation | |
| CN102641751B (en) | Method for performing positioning sulfonation on cation exchange resin by using sulfur trioxide | |
| CN207204090U (en) | A kind of polycarboxylate water-reducer synthesizer with automated sensor | |
| CN103435376A (en) | Method and apparatus used for preparing ammonium phosphate fertilizer from phosphoric acid sediment | |
| CN203582808U (en) | Industrial modified asphalt processing equipment | |
| CN101863635A (en) | New process formula for producing naphthalene series water reducer of concrete admixture | |
| CN101492167A (en) | Method for producing sodalite pure phase with shale ash | |
| CN102093206A (en) | Method for preparing levulinic acid by hydrolyzing sucrose by using nickel sulfate on silica gel as catalyst | |
| CN113480399A (en) | Preparation method of pentamethyl indane | |
| CN101298333B (en) | Preparation of 2ZnO.2B2O3.3.5H2O zinc borate | |
| CN105645817A (en) | Preparation method for cement water-reducing agent | |
| CN102731140A (en) | Foaming agent of sandwich foam concrete for composite insulation walls and method for making the same | |
| CN103787364A (en) | Method for preparing mordenite by using diatomite | |
| CN103964735A (en) | Preparation method for beet molasses-waste yeast liquid ultralow-hydration heat polycarboxylate water reducer | |
| CN106008220A (en) | Method for preparing p-nitrobenzoic acid through polystyrene foam | |
| CN112923780B (en) | Cleaning method of graphite heat exchanger for organic silicon production | |
| CN101723616A (en) | Method for preparing concrete water reducing agent | |
| CN209333733U (en) | The device of sulfonating reaction efficiency in a kind of raising naphthalene series high-efficiency water-reducing agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |