CN218058484U - Hydrolysis treatment system for waste salt mud in trimethyl orthoformate production process - Google Patents
Hydrolysis treatment system for waste salt mud in trimethyl orthoformate production process Download PDFInfo
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- CN218058484U CN218058484U CN202120218277.7U CN202120218277U CN218058484U CN 218058484 U CN218058484 U CN 218058484U CN 202120218277 U CN202120218277 U CN 202120218277U CN 218058484 U CN218058484 U CN 218058484U
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- Prior art keywords
- trimethyl orthoformate
- feed inlet
- storage tank
- tank
- filter
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- PYOKUURKVVELLB-UHFFFAOYSA-N trimethyl orthoformate Chemical compound COC(OC)OC PYOKUURKVVELLB-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 150000003839 salts Chemical class 0.000 title claims abstract description 22
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 19
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000002699 waste material Substances 0.000 title claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 42
- 239000011780 sodium chloride Substances 0.000 claims abstract description 21
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 16
- 238000002425 crystallisation Methods 0.000 claims abstract description 14
- 230000008025 crystallization Effects 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- 230000008020 evaporation Effects 0.000 claims abstract description 10
- 238000010992 reflux Methods 0.000 claims abstract description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 230000003301 hydrolyzing effect Effects 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000007790 solid phase Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 39
- 235000011116 calcium hydroxide Nutrition 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 7
- AMJQWGIYCROUQF-UHFFFAOYSA-N calcium;methanolate Chemical compound [Ca+2].[O-]C.[O-]C AMJQWGIYCROUQF-UHFFFAOYSA-N 0.000 description 5
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000004821 distillation Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 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 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- NVXIEDHPFHVZTC-UHFFFAOYSA-N calcium;methanol Chemical compound [Ca].OC NVXIEDHPFHVZTC-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a processing system that hydrolysises of abandonment salt mud in trimethyl orthoformate production technology, including hydrolysis tank, filter, calcium hydrate storage tank, rectifying column, reflux drum, evaporation crystallization unit and sodium chloride storage tank. Has the advantages that: the utility model discloses simple structure easily realizes, can obtain two kinds of industrial products of calcium hydrate and sodium chloride with the abandonment salt mud of original through handling, and the methyl alcohol that obtains through the hydrolysis still can flow back to in the trimethyl orthoformate production technology, has reduced the quantity of methyl alcohol in the trimethyl orthoformate production technology, has improved the utilization ratio of abandonment salt mud as a resource, has improved the economic benefits of enterprise greatly.
Description
The technical field is as follows:
the utility model relates to a processing system that hydrolysises of abandonment salt mud especially relates to the processing system that hydrolysises of abandonment salt mud in the trimethyl orthoformate production technology.
The background art comprises the following steps:
trimethyl orthoformate (also called trimethoxymethane [ HC (OCH 3) 3 ]), which is a colorless liquid with pungent odor, is flammable, can be decomposed when contacting water, and can be dissolved in ethanol, ether, etc. Is an important organic synthesis intermediate, and is used for synthesizing various medicines, dyes, spices and the like. In recent years, the market demand of various industries on trimethyl orthoformate is obviously increased, and the market prospect is good.
In the process of producing trimethyl orthoformate, sodium metal and methanol are firstly reacted to generate sodium methoxide and hydrogen, and the sodium methoxide is further reacted with chloroform to generate trimethyl orthoformate and sodium chloride. Due to the purity problem of the raw material metal sodium, metal calcium impurities are often contained in the raw material metal sodium, and the metal calcium reacts with methanol to further generate methanol calcium impurities, so that the finally obtained product contains trimethyl orthoformate, sodium chloride and calcium methoxide, the trimethyl orthoformate product and salt mud with the main components of calcium methoxide and sodium chloride are obtained after further distillation, usually, the salt mud is used as solid waste to be treated in a centralized manner and then discharged, the waste of the contained sodium chloride is caused, the resource saving is not facilitated, and the economic benefit of enterprises is greatly influenced.
The utility model has the following contents:
an object of the utility model is to provide a simple structure, improved abandonment salt mud's hydrolysis treatment system of abandonment salt mud in trimethyl orthoformate production technology of resource utilization ratio of abandonment salt mud.
The utility model discloses implement by following technical scheme:
the system for hydrolyzing the waste salt mud in the trimethyl orthoformate production process comprises a hydrolysis tank, a filter, a calcium hydroxide storage tank, a rectifying tower, a reflux tank, an evaporation crystallization unit and a sodium chloride storage tank;
the discharge hole of the hydrolysis tank is communicated with the feed inlet of the filter, and the solid phase outlet of the filter is communicated with the inlet of the calcium hydroxide storage tank; the liquid phase export of filter with the feed inlet intercommunication of rectifying column, the light component export of rectifying column with the import intercommunication of reflux tank, the tower bottom liquid export of rectifying column with the feed inlet intercommunication of evaporation crystallization unit's triple effect evaporator, evaporation crystallization unit's stoving fluidized bed the discharge gate with the import intercommunication of sodium chloride storage tank.
Further, the evaporative crystallization unit comprises a triple-effect evaporator, a centrifugal crystallizer and a drying fluidized bed;
and the discharge hole of the triple-effect evaporator is communicated with the feed inlet of the centrifugal crystallizer, and the discharge hole of the centrifugal crystallizer is communicated with the feed inlet of the drying fluidized bed.
Further, a liquid outlet of the centrifugal crystallizer is communicated with a feed inlet of the triple-effect evaporator.
The utility model has the advantages that:
the utility model firstly decomposes calcium methoxide into calcium hydroxide and methanol through hydrolysis treatment, and then the calcium hydroxide is filtered out after being filtered by a filter and stored in a calcium hydroxide storage tank to be sold as a product; then, through distillation treatment, separating out methanol at the top of the rectifying tower, storing the methanol in a reflux tank and reusing the methanol as a raw material in the trimethyl orthoformate production process; the tower bottom liquid which is extracted from the bottom of the rectifying tower and mainly comprises sodium chloride can reach the industrial salt standard after evaporation and crystallization, and is stored in a sodium chloride storage tank to be sold as a product.
The utility model discloses simple structure easily realizes, can obtain two kinds of industrial products of calcium hydrate and sodium chloride with the abandonment salt mud of original through handling, and the methyl alcohol that obtains through hydrolysising still can flow back to the trimethyl orthoformate production technology in, has reduced the quantity of methyl alcohol in the trimethyl orthoformate production technology, has improved the resource utilization ratio of abandonment salt mud, has improved the economic benefits of enterprise greatly.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the system structure of the present embodiment.
In the figure: the device comprises a hydrolysis tank 1, a filter 2, a calcium hydroxide storage tank 3, a rectifying tower 4, a reflux tank 5, an evaporative crystallization unit 6, a triple-effect evaporator 6.1, a centrifugal crystallizer 6.2, a drying fluidized bed 6.3 and a sodium chloride storage tank 7.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example 1:
the system for hydrolyzing the waste salt slurry in the trimethyl orthoformate production process shown in fig. 1 comprises a hydrolysis tank 1, a filter 2, a calcium hydroxide storage tank 3, a rectifying tower 4, a reflux tank 5, an evaporation crystallization unit 6 and a sodium chloride storage tank 7; the evaporative crystallization unit 6 comprises a triple-effect evaporator 6.1, a centrifugal crystallizer 6.2 and a drying fluidized bed 6.3;
the discharge hole of the hydrolysis tank 1 is communicated with the feed inlet of the filter 2, and the solid phase outlet of the filter 2 is communicated with the inlet of the calcium hydroxide storage tank 3; the liquid phase outlet of the filter 2 is communicated with the feed inlet of the rectifying tower 4, the light component outlet of the rectifying tower 4 is communicated with the inlet of the reflux tank 5, the tower bottom liquid outlet of the rectifying tower 4 is communicated with the feed inlet of the triple-effect evaporator 6.1, the discharge outlet of the triple-effect evaporator 6.1 is communicated with the feed inlet of the centrifugal crystallizer 6.2, the discharge outlet of the centrifugal crystallizer 6.2 is communicated with the feed inlet of the drying fluidized bed 6.3, the liquid outlet of the centrifugal crystallizer 6.2 is communicated with the feed inlet of the triple-effect evaporator 6.1, and the discharge outlet of the drying fluidized bed 6.3 is communicated with the inlet of the sodium chloride storage tank 7.
The working principle is as follows:
firstly, salt mud which mainly comprises calcium methoxide and sodium chloride and is generated in the trimethyl orthoformate production process enters a hydrolysis tank 1 to be hydrolyzed in water with the temperature of 90 ℃ so that the calcium methoxide is decomposed into calcium hydroxide and methanol; then, after being filtered by a filter 2, calcium hydroxide is filtered out and stored in a calcium hydroxide storage tank 3 to be sold as a product; the filtrate which takes sodium chloride and methanol as main components enters a rectifying tower 4 for distillation treatment, the methanol is separated out at the top of the rectifying tower 4 and stored in a reflux tank 5 to be reused as raw materials to be recycled to the trimethyl orthoformate production process; tower bottom liquid which is extracted from the bottom of the rectifying tower 4 and mainly comprises sodium chloride firstly enters a triple-effect evaporator 6.1 for concentration, then enters a centrifugal crystallizer 6.2 for crystallization, and finally is dried by a drying fluidized bed 6.3, so that the industrial salt standard can be achieved, and the tower bottom liquid is stored in a sodium chloride storage tank 7 to be sold as a product. Meanwhile, the liquid generated by the centrifugal crystallizer 6.2 flows back into the triple-effect evaporator 6.1, so that the evaporation solution in the triple-effect evaporator 6.1 can be supplemented on one hand, and the sodium chloride contained in the part of liquid can be further recovered on the other hand.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The system for hydrolyzing the waste salt mud in the trimethyl orthoformate production process is characterized by comprising a hydrolysis tank, a filter, a calcium hydroxide storage tank, a rectifying tower, a reflux tank, an evaporative crystallization unit and a sodium chloride storage tank;
the discharge hole of the hydrolysis tank is communicated with the feed inlet of the filter, and the solid phase outlet of the filter is communicated with the inlet of the calcium hydroxide storage tank; the liquid phase export of filter with the feed inlet intercommunication of rectifying column, the light component export of rectifying column with the import intercommunication of reflux tank, the tower bottom liquid export of rectifying column with the feed inlet intercommunication of evaporation crystallization unit's triple effect evaporator, evaporation crystallization unit's the discharge gate of stoving fluidized bed with the import intercommunication of sodium chloride storage tank.
2. The system for hydrolysis treatment of waste salt sludge in trimethyl orthoformate production process of claim 1, wherein said evaporation crystallization unit comprises a triple effect evaporator, a centrifugal crystallizer and a drying fluidized bed;
and the discharge hole of the triple-effect evaporator is communicated with the feed inlet of the centrifugal crystallizer, and the discharge hole of the centrifugal crystallizer is communicated with the feed inlet of the drying fluidized bed.
3. The system for hydrolysis treatment of waste salt mud in trimethyl orthoformate production process of claim 2, wherein the liquid outlet of said centrifugal crystallizer is connected to the feed inlet of said triple effect evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120218277.7U CN218058484U (en) | 2021-01-26 | 2021-01-26 | Hydrolysis treatment system for waste salt mud in trimethyl orthoformate production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120218277.7U CN218058484U (en) | 2021-01-26 | 2021-01-26 | Hydrolysis treatment system for waste salt mud in trimethyl orthoformate production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218058484U true CN218058484U (en) | 2022-12-16 |
Family
ID=84397173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120218277.7U Active CN218058484U (en) | 2021-01-26 | 2021-01-26 | Hydrolysis treatment system for waste salt mud in trimethyl orthoformate production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218058484U (en) |
-
2021
- 2021-01-26 CN CN202120218277.7U patent/CN218058484U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hydrolysis treatment system for waste salt sludge in the production process of trimethyl orthoformate Effective date of registration: 20230324 Granted publication date: 20221216 Pledgee: Bank of China Limited BAYANHOT branch Pledgor: ALXA LEAGUE LANFENG CHEMICAL Co.,Ltd. Registration number: Y2023150000050 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20221216 Pledgee: Bank of China Limited BAYANHOT branch Pledgor: ALXA LEAGUE LANFENG CHEMICAL Co.,Ltd. Registration number: Y2023150000050 |