CN203540522U - Reaction tower for dimethyl sulfate esterification - Google Patents
Reaction tower for dimethyl sulfate esterification Download PDFInfo
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- CN203540522U CN203540522U CN201320681390.4U CN201320681390U CN203540522U CN 203540522 U CN203540522 U CN 203540522U CN 201320681390 U CN201320681390 U CN 201320681390U CN 203540522 U CN203540522 U CN 203540522U
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Abstract
The utility model relates to the field of chemical industry and particularly discloses a reaction tower for dimethyl sulfate esterification. The reaction tower for the dimethyl sulfate esterification comprises a tower body, wherein a top feeding opening and a material outlet are respectively arranged at the top and the bottom of the tower body; the inside of the tower body is sequentially divided into an upper-layer tower cavity, a middle-layer tower cavity and a lower-layer tower cavity from top to bottom through an upper tower board and a lower tower board which are arranged up and down; the three layers of tower cavities are respectively connected with a cooling device; a guide cylinder with an opened top end is arranged at the middle position of the bottom of each layer of tower cavity; a gas distributor is arranged at the bottom of each guide cylinder; each gas distributor is communicated with a gas inlet in the lateral wall of the corresponding layer of tower cavity through a pipeline. The reaction tower for the dimethyl sulfate esterification provided by the utility model has the beneficial effects that the contact time of dimethyl ether and sulfur trioxide in the dimethyl sulfate esterification process can be effectively prolonged, so as to ensure that the dimethyl ether is excessively reacted. Therefore, the sulfur trioxide can be entirely reacted, so that the acidity of the product can be reduced. The esterification process is converted from interrupted production into continuous production.
Description
(1) technical field
The utility model relates to chemical field, particularly a kind of dimethyl suflfate esterification reaction tower.
(2) background technology
Reaction tower is the device for two or more material is reacted under certain pressure, uniform temperature common in Chemical Manufacture, is usually used in gas and liquid countercurrent haptoreaction.Generally, after material enters in tower, under the condition of steam or other outside heat supply (or cooling), make the characteristic due to material between material that chemical reaction occur.In Chemical Manufacture, common reaction tower major part is to adopt liquid material to enter from tower top (tower side), gas material enters from tower bottom side, the final product generating is from tower bottom extraction, and utilize the inner heat exchanger arranging of tower to adopt external impetus to reacting needed heat, to carry out the measure of forced circulation, thereby guarantee the needed temperature and pressure of reaction.Existing reaction tower can only meet the simple gas-liquid contact reaction of ordinary material, and for the esterification process of dimethyl suflfate, general simple reaction tower cannot be used, because dimethyl ether is a kind of liquid gas, its volatility is very large, if can not have enough spaces and stroke just cannot allow itself and the sulfur trioxide in liquid phase have enough contacting and reach to react completely.
The esterification process of existing dimethyl suflfate is generally to adopt esterification tank to carry out, in order to guarantee that dimethyl ether can fully react with sulfur trioxide, therefore need considerable time to allow it fully react, this just makes production process cause interruption, and reaction or meeting are not exclusively, inhomogeneous, reaction speed is slow, reaction efficiency is low, in addition the esterification process of dimethyl suflfate can produce a large amount of heats, and temperature in the characteristic requirements tank of esterification tank self can not be too high, therefore need the outside continuing to lower the temperature to guarantee the temperature in esterification tank, energy consumption is high, to production work, brought inconvenience.
(3) summary of the invention
The utility model is in order to make up the deficiencies in the prior art, provide a kind of rational in infrastructure, simple to operate, can produce continuously, make that esterification is full and uniform, reaction speed is fast, production efficiency is high, energy-saving and cost-reducing, the dimethyl suflfate esterification reaction tower that reduces product acidity, safety and environmental protection.
The utility model is achieved by the following technical solution:
A kind of dimethyl suflfate esterification reaction tower, comprise tower body, top and bottom at tower body are respectively equipped with top fed mouth and material outlet, on tower body inside being divided into from top to bottom successively by upper column plate setting up and down and lower column plate in tower body, in, lower three layers of tower chamber, three layers of tower chamber are connected with a cooling device respectively, in the centre position, bottom in every layer of tower chamber, be equipped with the open guide shell arranging in a top, in the bottom of each guide shell, be equipped with a gas distributor, each gas distributor respectively by a pipeline be located at this layer of gas feed on the sidewall of tower chamber and be connected, gas feed on the sidewall of last layer tower chamber is connected with the gas vent that is located at lower one deck tower chamber top side wall by the pipeline being located at outside tower body, the gas feed in orlop tower chamber is connected with source of the gas by pipeline, upper, between tower chamber, middle level, be provided with an overflow cylinder that is positioned at the connection two tower chambeies in guide shell outside, the top and bottom of this overflow cylinder are respectively equipped with an inlet and liquid outlet, in, between lower floor's tower chamber, be provided with an overflow cylinder that is positioned at the connection two tower chambeies in guide shell outside, the top and bottom of this overflow cylinder are respectively equipped with an inlet and liquid outlet, be positioned at the inlet position of overflow cylinder in tower chamber, middle level higher than the top of tower chamber, middle level inner draft tube.
Described cooling device comprises a drum and cooling gas outlet and cooling inlet on the sidewall of tower chamber setting up and down, in tower chamber, be provided with the cooling pipe that is communicated with cooling gas outlet and cooling inlet, cooling inlet is connected with the liquid outlet of drum through water pump by the pipeline that is located at tower body outside, cooling gas outlet, by being located at the pipeline of tower body outside and the air inlet of drum is connected, is provided with a steam (vapor) outlet at the top of drum.
The beneficial effect of the utility model dimethyl suflfate esterification reaction tower is: rational in infrastructure, can effectively increase the Long contact time of dimethyl ether and sulfur trioxide in dimethyl suflfate esterification process, guaranteed the excessive response of dimethyl ether, thereby make sulfur trioxide energy complete reaction, reduced the acidity of product, for the fine work of dimethyl suflfate, purify and accelerated speed, reduced the generation of waste residue, make esterification process become continuous production from being interrupted to produce, reaction pressure and temperature have been improved, reaction speed is fast, and production efficiency is high; Make esterification more easy to operate, the indices in production is more stable, and whole production process seals more, continuously, greatly reduces the risk of safety and environmental protection.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model.
In figure, 1 tower body, 2 top fed mouths, 3 material outlets, column plate on 4,5 times column plates, 6 guide shells, 7 gas distributors, 8 gas feeds, 9 gas vents, 10 overflow cylinders, 11 inlets, 12 liquid outlets, 13 drums, 14 cooling gas outlets, 15 cooling inlets, 16 cooling pipes, 17 water pumps, 18 liquid outlets, 19 air inlets, 20 steam (vapor) outlets, 21 tower chambeies, upper strata, 22 tower chambeies, middle level, 23 lower floor's tower chambeies.
(5) specific embodiment
In order to make technology of the present utility model, feature, object and effect etc. be easier to understand, understand, below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is carried out to clear, complete description, but the utility model is not limited to this.
As shown in fig. 1, this embodiment comprises tower body 1, top and bottom at tower body 1 are respectively equipped with top fed mouth 2 and material outlet 3, on tower body 1 inside being divided into from top to bottom successively by upper column plate 4 setting up and down and lower column plate 5 in tower body 1, in, lower three layers of tower chamber, three layers of tower chamber are connected with a cooling device respectively, in the centre position, bottom in every layer of tower chamber, be equipped with the open guide shell 6 arranging in a top, in the bottom of each guide shell 6, be equipped with a gas distributor 7, each gas distributor 7 respectively by a pipeline be located at this layer of gas feed 8 on the sidewall of tower chamber and be connected, gas feed 8 on the sidewall of last layer tower chamber is connected with the gas vent 9 that is located at lower one deck tower chamber top side wall by the pipeline being located at outside tower body 1, the gas feed 8 in orlop tower chamber is connected with source of the gas by pipeline, upper, between tower chamber, middle level, be provided with an overflow cylinder 10 that is positioned at the connection two tower chambeies in guide shell 6 outsides, the top and bottom of this overflow cylinder 10 are respectively equipped with an inlet 11 and liquid outlet 12, in, between lower floor's tower chamber, be provided with an overflow cylinder 10 that is positioned at the connection two tower chambeies in guide shell 6 outsides, the top and bottom of this overflow cylinder 10 are respectively equipped with an inlet 11 and liquid outlet 12, be positioned at inlet 11 positions of overflow cylinder 10 in tower chamber, middle level 22 higher than the top of tower chamber, middle level 22 inner draft tubes 6, cooling device comprises a drum 13 and cooling gas outlet 14 and cooling inlet 15 on the sidewall of tower chamber setting up and down, in tower chamber, be provided with the cooling pipe 16 that is communicated with cooling gas outlet 14 and cooling inlet 15, cooling inlet 15 is connected with the liquid outlet 18 of drum 13 through water pump 17 by the pipeline that is located at tower body 1 outside, cooling gas outlet 14, by being located at the pipeline of tower body 1 outside and the air inlet 19 of drum 13 is connected, is provided with a steam (vapor) outlet 20 at the top of drum 13.
From the gas feed 8 in lower floor's tower chamber 23, by pipeline, through gas distributor 7, dimethyl ether is distributed in lower floor's tower chamber 23 equably gas of dimethyl ether, in lower floor's tower chamber 23, be full of after gas of dimethyl ether, through the pipeline of tower body 1 outside, the gas feed 8 from 22 sidewalls of tower chamber, middle level enters into tower chamber, middle level 22 to the gas vent 9 of gas of dimethyl ether by lower floor's tower chamber 23 top side wall, by pipeline, through gas distributor 7, be uniformly distributed in tower chamber, middle level 22 again, in tower chamber, middle level 22, be full of after gas of dimethyl ether, gas of dimethyl ether by tower chamber, middle level 22 top side wall gas vent 9 through the pipeline of tower body 1 outside, the gas feed 8 from 21 sidewalls of tower chamber, upper strata enters into tower chamber, upper strata 21, by pipeline, through gas distributor 7, dimethyl ether is distributed in tower chamber, upper strata 21 equably again, when the pressure in whole tower body 1 reaches setting value, from top fed mouth 2, add the material of the pyrosulfuric acid dimethyl ester that contains sulfur trioxide, first liquid material enters in the guide shell 6 in tower chamber, upper strata 21, first sulfur trioxide reacts with the gas of dimethyl ether rising from bottom in the guide shell 6 in tower chamber, upper strata 21, now the sulfur trioxide in liquid material is excessive, the liquid material that contains sulfur trioxide not reacting completely continues to increase, after overflowing from the guide shell 6 in tower chamber, upper strata 21, enter in tower chamber, upper strata 21, continue to react with the gas of dimethyl ether in tower chamber, upper strata 21, until liquid material, continue to increase when flooding the inlet 11 of tower chamber, upper strata 21 interior overflow cylinders 10, liquid material by this inlet 11 in overflow cylinder 10 flows into tower chamber, middle level 22, continue to react with the gas of dimethyl ether in tower chamber, middle level 21, along with the liquid material in tower chamber, middle level 22 increases gradually, liquid material will overflow in the guide shell 6 in tower chamber, middle level 22, the sulfur trioxide now not reacting completely in liquid material continues further to react with dimethyl ether, the liquid material that reaction generates is on the increase when flooding the inlet 11 of tower chamber, middle level 22 interior overflow cylinders 10, liquid material by this inlet 11 in overflow cylinder 10 flows into lower floor's tower chamber 23, in lower floor's tower chamber 23, excessive dimethyl ether reacts with a small amount of sulfur trioxide, sulfur trioxide is reacted completely, thereby the acidity in material is reduced greatly, reached need of production, the dimethyl suflfate extraction from material outlet 3 finally generating.Reaction tower is divided into three layers, makes every one deck tower chamber that gas-liquid contact can occur and absorb, course of reaction is shortened, allow the liquid material of variable concentrations and the dimethyl ether of different amounts that fully reaction can occur.Every one deck tower chamber is all connected with cooling device, cooling water in drum 13 is entered by cooling inlet 15 in the tower chamber of every one deck through water pump 17 by liquid outlet 12, the heat producing with esterification process exchanges generation low-pressure steam, low-pressure steam is entered in drum 13 by air inlet 19 by pipeline through cooling gas outlet 14, low-pressure steam carries out after gas-liquid separation in drum 13, steam enters another operation by steam (vapor) outlet 20 and carries out heat recovery and utilization, changed original method with circulating water cooling, energy-saving and cost-reducing.
In order to solve, in common response tower, between material, react incomplete, inhomogeneous problem, in every layer of tower chamber, be equipped with guide shell 6, to guarantee having enough liquid materials to exist in each tower chamber, in the bottom of guide shell 6, be provided with gas distributor 7, in each tower chamber, guide shell 6 is set simultaneously, make gas from bottom even distributes, under guide shell 6 effect, drive liquid to rotate again or flow, thereby make to react completely, uniform, do not stay dead angle.In order to make liquid material and gas material can have an attaching space effectively, overflow cylinder 10 has played key effect, while only having material to exceed inlet 11 height of overflow cylinder 10, material just can enter next tower chamber, the setting of overflow cylinder 10 has not only guaranteed certain liquid height, has also guaranteed that material has the enough reaction time.
The utility model dimethyl suflfate esterification reaction tower is divided into three layers by tower body 1, allow sulfur trioxide and the dimethyl ether of variable concentrations react in the tower chamber of different layers, utilize the characteristic of dimethyl ether simultaneously, thereby allow dimethyl ether excessive raising tower internal pressure in tower, thereby allow whole process react and to have accelerated reaction rate in pressurization situation, and the increase of reaction rate, reaction temperature in tower is improved greatly, utilize cooling device to adopt the measure of external forced circulation, allow heat in tower make to produce in cooling device low-pressure steam, thereby accomplished heat recovery, played energy-saving effect.The utility model esterification reaction tower is exactly to adopt three layers of design from the different of common response tower, adopt between layers outside walk gas phase pipeline and inner walk the combination of liquid pipe, the stroke that extends material makes fully contact between material, fully reaction.In addition, gas phase pipeline is walked in outside, can simplify the structure of tower body inside, makes material have sufficient reaction compartment.This dimethyl suflfate esterification reaction tower has adopted the excessive reaction pattern of dimethyl ether, make the fully reaction in liquid phase of sulfur trioxide and dimethyl ether, and in pressurization situation, contact between material is better, reaction is more thorough, thereby reduced acidity, greatly improved product quality, reduced the quantity of waste residue, reduce cost, alleviated environmental protection pressure.The concentration that contains sulfur trioxide material due to every one deck tower chamber is different, the speed of reaction and the heat of generation are also different, in every one deck tower chamber, be separately provided with cooling device, adopt the measure of controlling cooling water flow, thereby guaranteed the reaction temperature in every one deck tower chamber, reaction is controlled in optimum range.
Claims (2)
1. a dimethyl suflfate esterification reaction tower, it is characterized in that: comprise tower body, top and bottom at tower body are respectively equipped with top fed mouth and material outlet, on tower body inside being divided into from top to bottom successively by upper column plate setting up and down and lower column plate in tower body, in, lower three layers of tower chamber, three layers of tower chamber are connected with a cooling device respectively, in the centre position, bottom in every layer of tower chamber, be equipped with the open guide shell arranging in a top, in the bottom of each guide shell, be equipped with a gas distributor, each gas distributor respectively by a pipeline be located at this layer of gas feed on the sidewall of tower chamber and be connected, gas feed on the sidewall of last layer tower chamber is connected with the gas vent that is located at lower one deck tower chamber top side wall by the pipeline being located at outside tower body, the gas feed in orlop tower chamber is connected with source of the gas by pipeline, upper, between tower chamber, middle level, be provided with an overflow cylinder that is positioned at the connection two tower chambeies in guide shell outside, the top and bottom of this overflow cylinder are respectively equipped with an inlet and liquid outlet, in, between lower floor's tower chamber, be provided with an overflow cylinder that is positioned at the connection two tower chambeies in guide shell outside, the top and bottom of this overflow cylinder are respectively equipped with an inlet and liquid outlet, be positioned at the inlet position of overflow cylinder in tower chamber, middle level higher than the top of tower chamber, middle level inner draft tube.
2. a kind of dimethyl suflfate esterification reaction tower according to claim 1, it is characterized in that: described cooling device comprises a drum and cooling gas outlet and cooling inlet on the sidewall of tower chamber setting up and down, in tower chamber, be provided with the cooling pipe that is communicated with cooling gas outlet and cooling inlet, cooling inlet is connected with the liquid outlet of drum through water pump by the pipeline that is located at tower body outside, cooling gas outlet, by being located at the pipeline of tower body outside and the air inlet of drum is connected, is provided with a steam (vapor) outlet at the top of drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681390.4U CN203540522U (en) | 2013-10-30 | 2013-10-30 | Reaction tower for dimethyl sulfate esterification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681390.4U CN203540522U (en) | 2013-10-30 | 2013-10-30 | Reaction tower for dimethyl sulfate esterification |
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| Publication Number | Publication Date |
|---|---|
| CN203540522U true CN203540522U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320681390.4U Withdrawn - After Issue CN203540522U (en) | 2013-10-30 | 2013-10-30 | Reaction tower for dimethyl sulfate esterification |
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| Country | Link |
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| CN (1) | CN203540522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566851A (en) * | 2013-10-30 | 2014-02-12 | 临沂远博化工有限公司 | Dimethyl sulfate esterification reaction tower |
| CN109748827A (en) * | 2019-02-03 | 2019-05-14 | 山东凯瑞英材料科技有限公司 | The process of continuous synthesis dimethyl suflfate |
-
2013
- 2013-10-30 CN CN201320681390.4U patent/CN203540522U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566851A (en) * | 2013-10-30 | 2014-02-12 | 临沂远博化工有限公司 | Dimethyl sulfate esterification reaction tower |
| CN109748827A (en) * | 2019-02-03 | 2019-05-14 | 山东凯瑞英材料科技有限公司 | The process of continuous synthesis dimethyl suflfate |
| CN109748827B (en) * | 2019-02-03 | 2021-09-14 | 山东凯瑞英材料科技有限公司 | Process for continuous synthesis of dimethyl sulfate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150729 |
|
| RGAV | Abandon patent right to avoid regrant |