CN107628940A - A kind of preparation method of lead stearate - Google Patents
A kind of preparation method of lead stearate Download PDFInfo
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- CN107628940A CN107628940A CN201710664638.9A CN201710664638A CN107628940A CN 107628940 A CN107628940 A CN 107628940A CN 201710664638 A CN201710664638 A CN 201710664638A CN 107628940 A CN107628940 A CN 107628940A
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- lead stearate
- lead
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- fine work
- stearate
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Abstract
The present invention relates to a kind of preparation method of lead stearate, described lead stearate is made up of the following raw material according to weight ratio：14.8 parts of 70 parts of lead acetate, 100 parts of stearic acid and caustic soda, described preparation method includes mixing, reaction, dehydration for the first time, washing, second dehydration, dries, crushes and checking procedure, the present invention have the advantages of production efficiency is high, energy consumption is low, technique is simple, purity is high.
Description
Technical field
The invention belongs to stearate preparing technical field, and in particular to a kind of preparation method of lead stearate.
Background technology
Domestic production stearate leads to generally using using stearic acid and the water-soluble metal salt of response as raw material at present
Neutralization reaction and metathesis reaction are crossed to prepare the technique of stearate, i.e., traditional double decomposition production technology, it includes two
Step reaction, the first step is neutralization reaction, and second step metathesis reaction, this method is reacted in aqueous medium, due to soda soap gel energy
Greatly, solubility is small, and solution is suddenly thick, and generation acid soap is easily combined with stearic acid, is also easily saltoutd, to obtain purer stearic acid
Salt, reaction must be carried out under conditions of suitable dilution with slow speed, and reaction vessel is big, low production efficiency, and energy consumption water consume is high,
For this problem, systematic research is carried out to the synthesis technique of stearate, according to the research experience of domestic scholars, in reality
In production, feeding mode is changed by experiment, traditional double decomposition improved on the basis of forefathers study, always
The single step reaction method technique using different raw material (metal salt, metal oxide, metal hydroxides) is born, and applies to reality
In the production of border, good productivity effect is generated.
The content of the invention
A kind of production efficiency height is provided it is an object of the invention to overcome the deficiencies in the prior art, energy consumption is low, technique is simple
The preparation method of lead stearate single, purity is high.
The technical scheme is that：A kind of preparation method of lead stearate, described lead stearate are by the following raw material
It is made according to weight ratio：14.8 parts of 70 parts of lead acetate, 100 parts of stearic acid and caustic soda, described preparation method comprises the following steps：
Step 1：Mixing, adds a certain amount of water in a kettle, while adds stearic acid, starts stirring, adds while stirring
Lead acetate and caustic soda, wherein mixing speed are 500-1000r/min；
Step 2：Reaction, is heated to the mixing in step 1, is heated while stirring until temperature rises to 70 DEG C, and keeps
Temperature is at 70 ± 1 DEG C, and wherein mixing speed is 500-1000r/min；
Step 3：It is dehydrated for the first time, after step 2 reaction certain time, stops stirring, obtains lead stearate crude product, and profit
Lead stearate crude product is dehydrated with centrifuge, wherein centrifuge speed is 3500-5000r/min；
Step 4：Washing, utilizes water washing to the lead stearate crude product after dehydration, obtains lead stearate fine work；
Step 5：Second of dehydration, the lead stearate fine work after being washed to step 4 is dehydrated using centrifuge, wherein centrifuging
Machine rotating speed is 3500-5000r/min；
Step 6：Dry, the fine work lead stearate obtained to step 5 carries out drying and dewatering using 80 DEG C of hot blasts, wherein when drying
Between be 15-25min；
Step 7：Crush, dried fine work lead stearate is crushed using pulverizer；
Step 8：Examine, product quality inspection is carried out to the fine work lead stearate after crushing, it is stearic to obtain up-to-standard fine work
Lead plumbate.
It is 1 that the quality of water and stearic mass ratio are added in described step one：2.
Heated in described step two using steam.
The inspection of described step eight includes free acid content inspection, lead ratio Content Test, fusing point are examined and apparent density
Examine.
The present invention has advantages below：It is of the invention compared with traditional double decomposition technique, single step reaction method technique it is anti-
Temperature is answered to reduce, the reaction time significantly shortens, and the solid ratio of reactant feed liquid one is substantially reduced, and filter cake moisture content has been reduced, significantly
Production efficiency is improved, and reduces energy consumption, water consume, the present invention improves production capacity using single step reaction method, and reaction has original
Two step double decompositions be changed into single step reaction, shorten the reaction time, save investment of production, the present invention has production efficiency
High, the advantages of energy consumption is low, technique is simple, purity is high.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
A kind of preparation method of lead stearate, described lead stearate are made up of the following raw material according to weight ratio：Lead acetate
70kg, stearic acid 100kg and caustic soda 14.8kg, described preparation method comprise the following steps：
Step 1：Mixing, adds 500 liters of water in a kettle, while adds 100kg stearic acid, starts stirring, side stirring
Side adds lead acetate 70kg and caustic soda 14.8kg, and wherein mixing speed is 500-1000r/min；
Step 2：Reaction, is heated to the mixing in step 1, is heated while stirring until temperature rises to 70 DEG C, and keeps
Temperature is at 70 ± 1 DEG C, and wherein mixing speed is 500r/min；
Step 3：It is dehydrated for the first time, after step 2 reaction 20min, stops stirring, obtain lead stearate crude product, and utilize
Centrifuge is dehydrated to lead stearate crude product, and wherein centrifuge speed is 3500r/min；
Step 4：Washing, 500 liters of water washing is utilized to the lead stearate crude product after dehydration, obtains lead stearate fine work；
Step 5：Second of dehydration, the lead stearate fine work after being washed to step 4 is dehydrated using centrifuge, wherein centrifuging
Machine rotating speed is 3500r/min；
Step 6：Dry, the fine work lead stearate obtained to step 5 carries out drying and dewatering using 80 DEG C of hot blasts, wherein when drying
Between be 20min；
Step 7：Crush, dried fine work lead stearate is crushed using pulverizer；
Step 8：Examine, product quality inspection is carried out to the fine work lead stearate after crushing, it is stearic to obtain up-to-standard fine work
Lead plumbate.
The present invention has advantages below：It is of the invention compared with traditional double decomposition technique, single step reaction method technique it is anti-
Temperature is answered to reduce, the reaction time significantly shortens, and the solid ratio of reactant feed liquid one is substantially reduced, and filter cake moisture content has been reduced, significantly
Production efficiency is improved, and reduces energy consumption, water consume, the present invention improves production capacity using single step reaction method, and reaction has original
Two step double decompositions be changed into single step reaction, shorten the reaction time, save investment of production, the present invention has production efficiency
High, the advantages of energy consumption is low, technique is simple, purity is high.
Embodiment 2
A kind of preparation method of lead stearate, described lead stearate are made up of the following raw material according to weight ratio：Lead acetate
35kg, stearic acid 50kg and caustic soda 7.4kg, described preparation method comprise the following steps：
Step 1：Mixing, adds 250 liters of water in a kettle, while adds 50kg stearic acid, starts stirring, side stirring
Side adds lead acetate 35kg and caustic soda 7.4kg, and wherein mixing speed is 1000r/min；
Step 2：Reaction, is heated to the mixing in step 1, is heated while stirring until temperature rises to 70 DEG C, and keeps
Temperature is at 70 ± 1 DEG C, and wherein mixing speed is 1000r/min；
Step 3：It is dehydrated for the first time, after step 2 reaction 15min, stops stirring, obtain lead stearate crude product, and utilize
Centrifuge is dehydrated to lead stearate crude product, and wherein centrifuge speed is 4000r/min；
Step 4：Washing, 250 liters of water washing is utilized to the lead stearate crude product after dehydration, obtains lead stearate fine work；
Step 5：Second of dehydration, the lead stearate fine work after being washed to step 4 is dehydrated using centrifuge, wherein centrifuging
Machine rotating speed is 4000r/min；
Step 6：Dry, the fine work lead stearate obtained to step 5 carries out drying and dewatering using 80 DEG C of hot blasts, wherein when drying
Between be 15min；
Step 7：Crush, dried fine work lead stearate is crushed using pulverizer；
Step 8：Examine, product quality inspection is carried out to the fine work lead stearate after crushing, it is stearic to obtain up-to-standard fine work
Lead plumbate.
The present invention has advantages below：It is of the invention compared with traditional double decomposition technique, single step reaction method technique it is anti-
Temperature is answered to reduce, the reaction time significantly shortens, and the solid ratio of reactant feed liquid one is substantially reduced, and filter cake moisture content has been reduced, significantly
Production efficiency is improved, and reduces energy consumption, water consume, the present invention improves production capacity using single step reaction method, and reaction has original
Two step double decompositions be changed into single step reaction, shorten the reaction time, save investment of production, the present invention has production efficiency
High, the advantages of energy consumption is low, technique is simple, purity is high.
Claims (4)
1. a kind of preparation method of lead stearate, described lead stearate is made up of the following raw material according to weight ratio：Lead acetate
14.8 parts of 70 parts, 100 parts of stearic acid and caustic soda, it is characterised in that：Described preparation method comprises the following steps：
Step 1：Mixing, adds a certain amount of water in a kettle, while adds stearic acid, starts stirring, adds while stirring
Lead acetate and caustic soda, wherein mixing speed are 500-1000r/min；
Step 2：Reaction, is heated to the mixing in step 1, is heated while stirring until temperature rises to 70 DEG C, and keeps
Temperature is at 70 ± 1 DEG C, and wherein mixing speed is 500-1000r/min；
Step 3：It is dehydrated for the first time, after step 2 reaction certain time, stops stirring, obtains lead stearate crude product, and profit
Lead stearate crude product is dehydrated with centrifuge, wherein centrifuge speed is 3500-5000r/min；
Step 4：Washing, utilizes water washing to the lead stearate crude product after dehydration, obtains lead stearate fine work；
Step 5：Second of dehydration, the lead stearate fine work after being washed to step 4 is dehydrated using centrifuge, wherein centrifuging
Machine rotating speed is 3500-5000r/min；
Step 6：Dry, the fine work lead stearate obtained to step 5 carries out drying and dewatering using 80 DEG C of hot blasts, wherein when drying
Between be 15-25min；
Step 7：Crush, dried fine work lead stearate is crushed using pulverizer；
Step 8：Examine, product quality inspection is carried out to the fine work lead stearate after crushing, it is stearic to obtain up-to-standard fine work
Lead plumbate.
A kind of 2. preparation method of lead stearate as claimed in claim 1, it is characterised in that：Water is added in described step one
Quality and stearic mass ratio be 1：2.
A kind of 3. preparation method of lead stearate as claimed in claim 1, it is characterised in that：Using steaming in described step two
Vapour heats.
A kind of 4. preparation method of lead stearate as claimed in claim 1, it is characterised in that：The inspection bag of described step eight
Include free acid content inspection, lead ratio Content Test, fusing point are examined and apparent density is examined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664638.9A CN107628940A (en) | 2017-08-07 | 2017-08-07 | A kind of preparation method of lead stearate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664638.9A CN107628940A (en) | 2017-08-07 | 2017-08-07 | A kind of preparation method of lead stearate |
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| CN107628940A true CN107628940A (en) | 2018-01-26 |
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| CN201710664638.9A Pending CN107628940A (en) | 2017-08-07 | 2017-08-07 | A kind of preparation method of lead stearate |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950574A (en) * | 1961-09-01 | 1964-02-26 | Goldschmidt Ag Th | Improvements in or relating to the preparation of metal soaps |
| CN1063482A (en) * | 1991-01-22 | 1992-08-12 | 延安油脂化工厂 | The preparation method of granular lead stearate |
| CN1107830A (en) * | 1994-01-15 | 1995-09-06 | 天津化工厂 | Process of preparing stearate |
| CN101486636A (en) * | 2008-11-20 | 2009-07-22 | 靖江旭光塑胶有限公司 | Preparation of nonaqueous synthesized lead stearate |
| CN102336645A (en) * | 2010-07-20 | 2012-02-01 | 辽宁嘉凯精化有限公司 | Granular stearate, and preparation method and application thereof |
-
2017
- 2017-08-07 CN CN201710664638.9A patent/CN107628940A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950574A (en) * | 1961-09-01 | 1964-02-26 | Goldschmidt Ag Th | Improvements in or relating to the preparation of metal soaps |
| CN1063482A (en) * | 1991-01-22 | 1992-08-12 | 延安油脂化工厂 | The preparation method of granular lead stearate |
| CN1107830A (en) * | 1994-01-15 | 1995-09-06 | 天津化工厂 | Process of preparing stearate |
| CN101486636A (en) * | 2008-11-20 | 2009-07-22 | 靖江旭光塑胶有限公司 | Preparation of nonaqueous synthesized lead stearate |
| CN102336645A (en) * | 2010-07-20 | 2012-02-01 | 辽宁嘉凯精化有限公司 | Granular stearate, and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 吴茂英: "合成硬脂酸铅的皂化法新工艺", 《塑料工业》 * |
| 王东权: "硬脂酸盐的生产工艺研究", 《中国优秀硕士学位论文全文数据库-工程科技I辑》 * |
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Application publication date: 20180126 |