CN212882379U - Ethylene carbonate synthesis apparatus for producing - Google Patents

Abstract

The utility model relates to a synthetic apparatus for producing of ethylene carbonate. The technical scheme is as follows: include at steel structural framework internal fixation first reactor, second reactor, carbon dioxide vaporizer, circulation heat exchanger, fall membrane ware, demister, condenser and product storage tank, the middle part of first reactor connect the carbon dioxide vaporizer, sub-unit connection circulation heat exchanger, the bottom is passed through the pipe connection second reactor, the top of second reactor falls the membrane ware through the pipe connection, falls the bottom connection demister of membrane ware, the pipe connection condenser is passed through at the top of demister, the bottom of condenser is passed through the pipe connection product storage tank. The beneficial effects are that: the skid-mounted device with the steel structure frame is adopted, the occupied area is small, the upper space is fully utilized, all equipment is reasonably distributed, and the time and the economic cost caused by the permission of land use are greatly reduced; in addition, the steel structure frame and the internal equipment thereof can be manufactured, constructed and assembled outside, and the construction period is shortened to several days.

Description

Ethylene carbonate synthesis apparatus for producing

Technical Field

The utility model relates to a production device of ethylene carbonate, in particular to a synthetic production device of ethylene carbonate.

Background

Ethylene carbonate is an excellent polar high-boiling point solvent, a surfactant raw material and an organic synthesis intermediate, Ethylene Carbonate (EC) is developed abroad to synthesize the furavanone, the dimethyl carbonate, the ethylene glycol and the functional polymer, and is used for modifying polymers and the like, the ethylene carbonate is widely applied to the field of organic synthesis and is a potential green organic chemical basic raw material, the ethylene carbonate can synthesize various fine chemicals through ester exchange reaction, and the ethylene carbonate is used in the fields of plastics, printing and dyeing, polymer synthesis, gas separation, electrochemistry and the like, and has great market potential.

From the demand end, the downstream of Ethylene Carbonate (EC) is the electrolyte rigidity demand, and the solvent is one of three major components of the lithium ion battery electrolyte and accounts for about 80-85% of the total mass of the electrolyte. Because of good solubility for lithium salts, carbonate solvents are the most common electrolyte solvents at present, and the electrolyte industry has obvious weak and busy seasons: q1 and Q2 are in lighter demand, Q3 reaches a peak, and Q4 is kept high.

Different from large chemical industries such as petroleum refining and the like, the profit space fluctuation of fine chemical products to which ethylene carbonate belongs is greatly influenced by the market, the continuous window period of the high profit stage is shorter, and the product profit is directly determined by the period of the extension device of a production enterprise.

For general enterprises, under the condition that the land utilization rate in a factory is close to saturation, the land use permission period for obtaining a newly-built device is long, and the profit window period is easy to miss.

Therefore, it is necessary to produce ethylene carbonate by using a production apparatus with short construction time and high land utilization.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a synthetic apparatus for producing of ethylene carbonate to the above-mentioned defect that prior art exists, can rely on current ethylene carbonate apparatus for producing to take up an area of, need not newly-increased land, reduce time and economic cost who leads because of the soil is used to the permission greatly, effectively utilize current soil simultaneously, guarantee the make full use of homeland resource.

The utility model provides a synthetic apparatus for producing of ethylene carbonate, its technical scheme is: the method comprises the steps of fixedly installing a first reactor (R1), a second reactor (R2), a carbon dioxide vaporizer (E1), a circulating heat exchanger (E2), a falling film device (E3), a demister (E4), a condenser (E5) and a product storage tank (V1) in a steel structure frame, wherein the carbon dioxide vaporizer (E1) is connected to the middle of the first reactor (R1), the circulating heat exchanger (E2) is connected to the lower portion of the first reactor, the bottom of the first reactor is connected with the second reactor (R2) through a pipeline, the top of the second reactor (R2) is connected with the falling film device (E3) through a pipeline, the demister (E4) is connected to the bottom of the falling film device (E3), the condenser (E5) is connected to the top of the demister (E4) through a pipeline, and the bottom of the condenser (E5) is connected with the product storage tank (V1) through a.

Preferably, the carbon dioxide pump (a 1) outside the steel structural frame is connected to the carbon dioxide vaporizer (E1) through a pipeline.

Preferably, the top of the first reactor (R1) is connected to ethylene oxide (a 2) and catalyst (a 3) by pipelines, and the output from the bottom of the first reactor (R1) is combined with ethylene oxide (a 2) and catalyst (a 3) by circulating heat exchanger (E2).

Preferably, the bottom of the demister (E4) is connected to the catalyst tank (b 1) through a pipeline.

Preferably, one end of the tube side of the condenser (E5) is communicated with a demister (E4), and the other end is communicated with a product storage tank (V1); the shell side of the condenser (E5) is connected with condensed water.

Preferably, the steel structural frame has a length, width and height of 4m 20 m.

The utility model has the advantages that: the utility model adopts the skid-mounted device with the steel structure frame, has small occupied area, fully utilizes the upper space, reasonably distributes each device, can be occupied by the prior ethylene carbonate production device, does not need to newly increase land, and greatly reduces the time and economic cost caused by the permission of land use; in addition, the steel structure frame and the internal equipment thereof can be manufactured, constructed and assembled outside, the construction period is shortened to a few days, and the production reduction caused by shutdown is reduced to the minimum.

Drawings

FIG. 1 is a schematic diagram of the structure of the device of the present invention;

fig. 2 is a diagram of an apparatus layout of the present invention;

FIG. 3 is a view of the overall installation structure of the present invention;

FIG. 4 is an enlarged partial view at one angle;

FIG. 5 is a partial enlarged view from another angle;

in the upper diagram: the system comprises a first reactor R1, a second reactor R2, a carbon dioxide vaporizer E1, a circulating heat exchanger E2, a falling film reactor E3, a demister E4, a condenser E5, a product storage tank V1, a carbon dioxide pump a1, ethylene oxide a2, a catalyst a3, a catalyst tank b1, a product discharge tank b2 and a steel structure frame C.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1, referring to fig. 1 to 3, the utility model provides a synthetic apparatus for producing ethylene carbonate, including fixed installation first reactor R1, second reactor R2, carbon dioxide vaporizer E1, circulating heat exchanger E2, falling film ware E3, demister E4, condenser E5 and product storage tank V1 in the steel structural frame, the middle part of first reactor R1 connect carbon dioxide vaporizer E1, the lower part connects circulating heat exchanger E2, the bottom is through pipeline connection second reactor R2, the top of second reactor R2 is through pipeline connection falling film ware E3, the bottom of falling film ware E3 connects demister E4, the top of demister E4 is through pipeline connection condenser E5, the bottom of condenser E5 is through pipeline connection product storage tank V1.

Wherein, a carbon dioxide pump a1 outside the steel structure frame is connected to a carbon dioxide vaporizer E1 through a pipeline.

The top of the first reactor R1 was connected by a line to ethylene oxide a2 and catalyst a3, and the output from the bottom of the first reactor R1 was passed through a recycle heat exchanger E2 to join together ethylene oxide a2 and catalyst a 3.

The bottom of the demister E4 was connected to a catalyst tank b1 via a pipeline.

One end of the tube side of the condenser E5 is communicated with a demister E4, and the other end is communicated with a product storage tank V1; the shell side of the condenser E5 is connected with condensed water.

The length, width and height of the steel structure frame are 4m 20 m.

When the device is used, carbon dioxide outside the steel structure frame C is pumped to a carbon dioxide vaporizer E1 in the steel structure frame, enters the middle part of a first reactor R1 after vaporization, discharges from the lower part of the first reactor R1 and is heated by a circulating heat exchanger E2 to collect catalyst and ethylene oxide pumped outside the frame, and the mixed material enters the upper part of the first reactor R1 to be fed; discharging from the bottom of the first reactor R1 into the bottom of the second reactor R2, discharging from the top of the second reactor R2, removing impurities and purifying by a falling film device E3 and a foam remover E4, feeding into a product storage tank V1 after passing through a condenser E5, conveying ethylene carbonate products to the outside of the frame, and discharging the removed catalyst to the outside of the frame through the lower part of the foam remover E4.

The utility model has the advantages as follows:

1. the skid-mounted device of the steel structure frame occupies only 16 square meters, fully utilizes the upper space, reasonably distributes equipment, can depend on the occupied area of the existing ethylene carbonate production device, does not need to newly increase land, and greatly reduces the time and economic cost caused by the permission of land use. Meanwhile, the existing land is effectively utilized, and the full utilization of the national soil resources is ensured.

2. The traditional device is transformed generally and all is transformed inside the current device, before transforming and all need to shut down the production before transforming and transform the in-process, the time of shutting down the production can reach dozens of days even several months, and the device transformation cycle of overlength can influence output and then influence profit greatly. The steel structure frame and the internal equipment thereof can be manufactured, constructed and assembled at other places, during the period, the original device can ensure that the production is stopped without stopping work, the prefabrication of pipelines of the interfaces of a feed inlet, a discharge outlet, water, electricity and gas and the like can be completed only by stopping the work for several days, the hoisting and the interface connection of the skid-mounted device can reduce the construction period of dozens of days or even months to several days, and the production reduction caused by the stop work is reduced to the lowest.

3. Traditional device transformation is generally all transformed inside the existing device, and the fire operation can be carried out in the transformation, so that certain safety risk is brought. And the steel structure frame only needs to carry out the operation of starting a fire at the kneck of business turn over material, and the scope of starting a fire is little and concentrated, and the safety risk that will start a fire operation and bring has reduced to minimum.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims (6)

1. A synthetic apparatus for producing ethylene carbonate is characterized in that: the method comprises the steps of fixedly installing a first reactor (R1), a second reactor (R2), a carbon dioxide vaporizer (E1), a circulating heat exchanger (E2), a falling film device (E3), a demister (E4), a condenser (E5) and a product storage tank (V1) in a steel structure frame, wherein the carbon dioxide vaporizer (E1) is connected to the middle of the first reactor (R1), the circulating heat exchanger (E2) is connected to the lower portion of the first reactor, the bottom of the first reactor is connected with the second reactor (R2) through a pipeline, the top of the second reactor (R2) is connected with the falling film device (E3) through a pipeline, the demister (E4) is connected to the bottom of the falling film device (E3), the condenser (E5) is connected to the top of the demister (E4) through a pipeline, and the bottom of the condenser (E5) is connected with the product storage tank (V1) through a.

2. The apparatus for synthesizing ethylene carbonate according to claim 1, wherein: the carbon dioxide pump (a 1) outside the steel structural frame is connected to a carbon dioxide vaporizer (E1) through a pipeline.

3. The apparatus for synthesizing ethylene carbonate according to claim 1, wherein: the top of the first reactor (R1) was connected by a line to ethylene oxide (a 2) and catalyst (a 3), and the output from the bottom of the first reactor (R1) was combined with ethylene oxide (a 2) and catalyst (a 3) via a recycle heat exchanger (E2).

4. The apparatus for synthesizing ethylene carbonate according to claim 1, wherein: the bottom of the demister (E4) was connected to a catalyst tank (b 1) via a line.

5. The apparatus for synthesizing ethylene carbonate according to claim 1, wherein: one end of the tube side of the condenser (E5) is communicated with a demister (E4), and the other end is communicated with a product storage tank (V1); the shell side of the condenser (E5) is connected with condensed water.

6. The apparatus for synthesizing ethylene carbonate according to claim 1, wherein: the length, width and height of the steel structure frame are 4m 20 m.

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