CN209226878U - The device of dimethoxym ethane is removed in pentaerythrite crude product - Google Patents
The device of dimethoxym ethane is removed in pentaerythrite crude product Download PDFInfo
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- CN209226878U CN209226878U CN201820963949.5U CN201820963949U CN209226878U CN 209226878 U CN209226878 U CN 209226878U CN 201820963949 U CN201820963949 U CN 201820963949U CN 209226878 U CN209226878 U CN 209226878U
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- pentaerythrite
- crude product
- dimethoxym ethane
- acid
- reaction kettle
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Abstract
The utility model relates to the device of dimethoxym ethane is removed in a kind of pentaerythrite crude product, it includes sequentially connected dissolution kettle, reaction kettle, filter device, drying device and packing machine, the dissolution kettle is for dissolving pentaerythrite crude product and adjusting concentration and pH value, the reaction kettle is used to control reaction pressure and temperature is hydrolyzed and crystallizes, the filter device is used for the separation of solid, liquid, and isolated solid product is dried by the drying device and packing machine, is packed.The presence that the utility model avoids dimethoxym ethane influences the crystallization of pentaerythrite, improves the quality of production of pentaerythrite, makes pentaerythrite increase 300-500 member per ton, can produce ten thousand yuan of 200-500 of economic benefit every year.
Description
Technical field
The utility model relates to first contracting is removed in Production of pentaerythritol technical field more particularly to a kind of pentaerythrite crude product
The device of aldehyde.
Background technique
During Production of pentaerythritol, formaldehyde, acetaldehyde generate season under the action of sodium hydroxide or calcium hydroxide catalyst
Penta tetrol crude product, including pentaerythrite, dipentaerythritol (content < 1%), tripentaerythritol (content < 0.1%), while first
Aldehyde and pentaerythrite, dipentaerythritol, tripentaerythritol react and generate pentaerythritol formal, dipentaerythritol first contracts
Aldehyde, tripentaerythritol dimethoxym ethane, the presence of such dimethoxym ethane influence the crystallization of pentaerythrite, further influence the quality of product.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of season penta for avoiding dimethoxym ethane from influencing pentaerythrite crystallization
The device of dimethoxym ethane is removed in tetrol crude product.
The technical scheme adopted by the utility model to solve the technical problem is as follows: removing first contracting in the pentaerythrite crude product
The device of aldehyde includes sequentially connected dissolution kettle, reaction kettle, filter device, drying device and packing machine, and the dissolution kettle is used for
Dissolution pentaerythrite crude product simultaneously adjusts concentration and pH value, the reaction kettle for control reaction pressure and temperature be hydrolyzed and
Crystallization, the filter device are used for the separation of solid, liquid, and isolated solid product is done by the drying device and packing machine
Dry, packaging.
In a kind of preferred embodiment for removing the device of dimethoxym ethane in pentaerythrite crude product provided by the utility model, institute
State reaction kettle be with heating, cooling, pressurization function reaction kettle.
In a kind of preferred embodiment for removing the device of dimethoxym ethane in pentaerythrite crude product provided by the utility model, water
The temperature control of the reaction kettle is controlled in 100~180 DEG C, pressure in 0.1~0.8Mpa when solution.
In a kind of preferred embodiment for removing the device of dimethoxym ethane in pentaerythrite crude product provided by the utility model, institute
Filter device is stated to be filtered using centrifuge filtering or Suction filtration device.
In a kind of preferred embodiment for removing the device of dimethoxym ethane in pentaerythrite crude product provided by the utility model, institute
The concentration for stating pentaerythrite crude product in dissolution kettle is adjusted to 100~400g/L.
In a kind of preferred embodiment for removing the device of dimethoxym ethane in pentaerythrite crude product provided by the utility model, institute
The pH value for stating pentaerythrite crude product in dissolution kettle is adjusted using organic acid or inorganic acid, and adjustable range is pH=1~6.
In a kind of preferred embodiment for removing the device of dimethoxym ethane in pentaerythrite crude product provided by the utility model, institute
Stating organic acid is formic acid, benzene sulfonic acid and its derivative or acetic acid, and the inorganic acid is sulfuric acid, sulfuric acid, phosphoric acid or nitric acid.
Compared with prior art, the beneficial effect of the device of dimethoxym ethane is removed in pentaerythrite crude product provided by the utility model
Fruit is: the first in pentaerythrite crude product successively through dissolution, hydrolysis, Crystallization Procedure, is contracted pentaerythrite crude product by the utility model
Aldehyde is hydrolyzed into pentaerythrite, dipentaerythritol, tripentaerythritol, then again crystallizes hydrolyzate, due to for dipentaerythritol
The content < 0.1% of content < 1%, tripentaerythritol, are not achieved crystallisation concentration, obtain the magma of pentaerythrite, avoid first
The presence of acetal influences the crystallization of pentaerythrite, improves the quality of production of pentaerythrite, makes pentaerythrite increase 300- per ton
500 yuan, it can produce ten thousand yuan of 200-500 of economic benefit every year.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is the structure principle chart that the device of dimethoxym ethane is removed in pentaerythrite crude product provided by the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, in the pentaerythrite crude product remove dimethoxym ethane device 1 include sequentially connected dissolution kettle 11,
Reaction kettle 12, filter device 13, drying device 14 and packing machine 15, the dissolution kettle 11 is for dissolving pentaerythrite crude product simultaneously
Concentration and pH value are adjusted, the reaction kettle 12 is used to control reaction pressure and temperature is hydrolyzed and crystallizes, the filter device
13 are used for the separation of solid, liquid, and isolated solid product is dried, is packed by the drying device 14 and packing machine 15.
Further, the reaction kettle 11 be with heating, cooling, pressurization function reaction kettle.
Preferably, the filter device 13 is filtered using centrifuge or Suction filtration device is filtered.
Embodiment one:
Step 1: dissolving and adjusts pH value, takes the pentaerythrite crude product 100g of mass fraction 95% in the dissolution kettle 11
The water of 400mL is added, organic acid or inorganic acid for adjusting pH value is then added to pH=4, the organic acid is formic acid, benzene sulfonic acid
And its derivative or acetic acid, the inorganic acid are sulfuric acid, sulfuric acid, phosphoric acid or nitric acid；
Step 2: the dissolved pentaerythrite crude liquid of step 1 is pumped into the reaction kettle 12, described in control by hydrolysis
The temperature of reaction kettle 12 in 165 DEG C, pressure in 0.5Mpa, and heat-insulation pressure keeping 2h；
Step 3: crystallization by 12 pressure release of reaction kettle and cools down, and the solution crystallization after making hydrolysis obtains pentaerythrite
Magma；
Step 4: the magma in step 3 is isolated pentaerythrite crystalline substance through filter device 13 by centrifugation, dry, packaging
Grain, centrate discharge to hydrolyzate treatment process, the pentaerythrite crystal grain isolated by the drying device 14 it is dry after by
The packing machine 15 is packed, and the pentaerythrite for accounting for pentaerythrite content in crude product 98.5% is obtained.
Embodiment two:
Step 1: dissolving and adjusts pH value, takes the pentaerythrite crude product 100g of mass fraction 95% in the dissolution kettle 11
The water of 500mL is added, organic acid or inorganic acid for adjusting pH value is then added to pH=5, the organic acid is formic acid, benzene sulfonic acid
And its derivative or acetic acid, the inorganic acid are sulfuric acid, sulfuric acid, phosphoric acid or nitric acid；
Step 2: the dissolved pentaerythrite crude liquid of step 1 is pumped into the reaction kettle 12, described in control by hydrolysis
The temperature of reaction kettle 12 in 148 DEG C, pressure in 0.35Mpa, and heat-insulation pressure keeping 3h；
Step 3: crystallization by 12 pressure release of reaction kettle and cools down, and the solution crystallization after making hydrolysis obtains pentaerythrite
Magma；
Step 4: the magma in step 3 is isolated pentaerythrite crystalline substance through filter device 13 by centrifugation, dry, packaging
Grain, centrate discharge to hydrolyzate treatment process, the pentaerythrite crystal grain isolated by the drying device 14 it is dry after by
The packing machine 15 is packed, and the pentaerythrite for accounting for pentaerythrite content in crude product 98% is obtained.
Embodiment three:
Step 1: dissolving and adjusts pH value, takes the pentaerythrite crude product 100g of mass fraction 95% in the dissolution kettle 11
The water of 300mL is added, organic acid or inorganic acid for adjusting pH value is then added to pH=2, the organic acid is formic acid, benzene sulfonic acid
And its derivative or acetic acid, the inorganic acid are sulfuric acid, sulfuric acid, phosphoric acid or nitric acid；
Step 2: the dissolved pentaerythrite crude liquid of step 1 is pumped into the reaction kettle 12, described in control by hydrolysis
The temperature of reaction kettle 12 in 165 DEG C, pressure in 0.5Mpa, and heat-insulation pressure keeping 4h；
Step 3: the reaction kettle is let out 12 pressures and cooled down by crystallization, and the solution crystallization after making hydrolysis obtains pentaerythrite
Magma；
Step 4: the magma in step 3 is isolated pentaerythrite crystalline substance through filter device 13 by centrifugation, dry, packaging
Grain, centrate discharge to hydrolyzate treatment process, the pentaerythrite crystal grain isolated by the drying device 14 it is dry after by
The packing machine 15 is packed, and the pentaerythrite for accounting for pentaerythrite content in crude product 99% is obtained.
The beneficial effect that the device of dimethoxym ethane is removed in pentaerythrite crude product provided by the utility model is: the utility model
By pentaerythrite crude product successively through dissolution, hydrolysis, Crystallization Procedure, the dimethoxym ethane in pentaerythrite crude product is hydrolyzed into Ji Wusi
Alcohol, dipentaerythritol, tripentaerythritol, then again crystallize hydrolyzate, due to the content < 1% for dipentaerythritol, three seasons
The content < 0.1% of penta tetrol, is not achieved crystallisation concentration, obtains the magma of pentaerythrite, and the presence for avoiding dimethoxym ethane influences
The crystallization of pentaerythrite improves the quality of production of pentaerythrite, makes pentaerythrite increase 300-500 per ton member, every year can be with
Generate ten thousand yuan of 200-500 of economic benefit.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases
The technical field of pass similarly includes within the scope of patent protection of the utility model.
Claims (7)
1. removing the device of dimethoxym ethane in a kind of pentaerythrite crude product, it is characterised in that: including sequentially connected dissolution kettle, reaction
Kettle, filter device, drying device and packing machine, the dissolution kettle are used to dissolve pentaerythrite crude product and adjust concentration and pH value,
The reaction kettle is used to control reaction pressure and temperature is hydrolyzed and crystallizes, and the filter device is used for the separation of solid, liquid, point
From solid product be dried, pack by the drying device and packing machine.
2. removing the device of dimethoxym ethane in pentaerythrite crude product according to claim 1, it is characterised in that: the reaction kettle
For with heating, cooling, pressurization function reaction kettle.
3. removing the device of dimethoxym ethane in pentaerythrite crude product according to claim 1 or 2, it is characterised in that: when hydrolysis
The temperature control of the reaction kettle is controlled in 100~180 DEG C, pressure in 0.1~0.8Mpa.
4. removing the device of dimethoxym ethane in pentaerythrite crude product according to claim 1, it is characterised in that: the filtering dress
It sets and is filtered using centrifuge filtering or Suction filtration device.
5. removing the device of dimethoxym ethane in pentaerythrite crude product according to claim 1, it is characterised in that: the dissolution kettle
The concentration of interior pentaerythrite crude product is adjusted to 100~400g/L.
6. the device of dimethoxym ethane is removed in pentaerythrite crude product according to claim 1 or 5, it is characterised in that: described molten
The pH value for solving pentaerythrite crude product in kettle is adjusted using organic acid or inorganic acid, and adjustable range is pH=1~6.
7. removing the device of dimethoxym ethane in pentaerythrite crude product according to claim 6, it is characterised in that: the organic acid
For formic acid, benzene sulfonic acid and its derivative or acetic acid, the inorganic acid is sulfuric acid, sulfuric acid, phosphoric acid or nitric acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820963949.5U CN209226878U (en) | 2018-06-19 | 2018-06-19 | The device of dimethoxym ethane is removed in pentaerythrite crude product |
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| CN201820963949.5U CN209226878U (en) | 2018-06-19 | 2018-06-19 | The device of dimethoxym ethane is removed in pentaerythrite crude product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248363A (en) * | 2021-05-17 | 2021-08-13 | 岳阳昌德环境科技有限公司 | Recycling method of methyl formate waste liquid |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248363A (en) * | 2021-05-17 | 2021-08-13 | 岳阳昌德环境科技有限公司 | Recycling method of methyl formate waste liquid |
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