Dimethyl ether removal device

Abstract

The utility model relates to the field of fuel purification, and discloses a dimethyl ether removal device which comprises a removal tank, a removal bin is arranged at the position, close to the bottom, in the removal tank, a liquefaction bin is arranged at the position, close to the top, in the removal tank, and a heat insulation plate is fixedly connected to the position, located between the removal bin and the liquefaction bin, in the removal tank. A dimethyl ether discharging pipe is fixedly connected to the portion, close to the bottom, of the outer surface of the removal tank, a dimethyl ether feeding pipe is fixedly connected to the portion, located at the top of the dimethyl ether discharging pipe, of the outer surface of the removal tank, a propane discharging pipe is fixedly connected to the portion, located at the top of the dimethyl ether feeding pipe, of the outer surface of the removal tank, and a liquefaction paddle is rotationally connected to the interior of the liquefaction bin; by controlling the temperature of the removal bin, propane is vaporized preferentially, dimethyl ether is kept in a liquid state, efficient separation of propane and dimethyl ether is achieved, the liquefaction paddle is cooled to minus 50 DEG C through the refrigeration device, gaseous propane is liquefied rapidly, the gas contact area is increased through the spiral structure, and the liquefaction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel purification field, concretely is a dimethyl ether removal device. BACKGROUND

[0002] In the energy, chemical and gas industry, propane is often used as fuel or raw material, but the presence of dimethyl ether can affect its calorific value, stability and subsequent process, so it is necessary to use dimethyl ether removal device, through dimethyl ether removal device realizes to propane's operation of removing dimethyl ether, thereby ensures the stability of propane.

[0003] Traditional removal methods such as rectification, adsorption or absorption have problems such as high energy consumption, complex equipment or low separation efficiency, rectification method depends on high temperature and high pressure conditions, needs large tower equipment, energy consumption is high and operation flexibility is poor, solvent absorption method needs to consume a large amount of polar solvent, waste liquid treatment is easy to cause secondary pollution, molecular sieve adsorption method is limited by adsorption capacity, frequent regeneration leads to low efficiency, catalytic conversion method may introduce new impurities, and the cost of catalyst is high, these methods generally have problems such as large equipment investment, high operation cost or insufficient separation efficiency, which is difficult to meet the demand of modern industry for high efficiency, environmental protection and economy. SUMMARY

[0004] The utility model aims at providing a kind of dimethyl ether removal device, to solve the problem of insufficient separation efficiency in the process that existing device separates dimethyl ether from propane.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of dimethyl ether removal device, including removal tank, the inside of removal tank is provided with removal bin by bottom, the inside of removal tank is provided with liquefaction bin by top, the inside of removal tank and between removal bin and liquefaction bin fixedly connected with temperature insulation plate, the outer surface of removal tank is fixedly connected with dimethyl ether discharge pipe by bottom, the outer surface of removal tank and in the top of dimethyl ether discharge pipe fixedly connected with dimethyl ether feed pipe, the outer surface of removal tank and in the top of dimethyl ether feed pipe fixedly connected with propane discharge pipe, the inside of liquefaction bin is rotatably connected with liquefaction paddle, the wall body of removal tank is equidistantly provided with six connection pipe grooves connecting removal bin and liquefaction bin, both ends of connection pipe groove are fixedly connected with one-way valve.

[0006] Preferably, the liquefaction paddle is in a hollow state, and a butt joint pipe is fixedly connected to the top of the liquefaction paddle and penetrates the top of the removal tank, the butt joint pipe and the liquefaction paddle are in communication with each other, and the liquefaction paddle as a whole is in a conical spiral shape.

[0007] Preferably, the dimethyl ether discharge pipe and the dimethyl ether feed pipe are in communication with the inside of the removal bin, and the propane discharge pipe is in communication with the inside of the liquefaction bin.

[0008] Preferably, the inside of the removal bin is rotationally connected with a main shaft, and the outer surface of the main shaft is fixedly connected with two paddles.

[0009] Preferably, the top of the main shaft is fixedly connected with the bottom of the liquefaction paddle, the bottom of the removal bin is fixedly connected with a motor, and the output shaft of the motor is fixedly connected with the main shaft.

[0010] Preferably, the inner wall of the liquefaction bin is slidingly connected with a scraper ring, the top of the scraper ring is fixedly connected with two lifting rods in a symmetrical manner, the lifting rods penetrate through the top of the removal bin, the top of the removal bin is fixedly connected with two pairs of fixed blocks in a symmetrical manner, the inside of the two pairs of fixed blocks is rotationally connected with gears, and the outer surface of the two lifting rods is provided with tooth grooves.

[0011] Preferably, the gears are engaged with the tooth grooves, the lifting rods are slidingly connected with the removal bin, and the bottom of the scraper ring is provided in a slope.

[0012] Preferably, the side surface of the two pairs of fixed blocks is fixedly connected with a motor, the output shaft of the motor penetrates through the side surface of the fixed block and is fixedly connected with the gear.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1) By controlling the temperature of the removal bin, propane is preferentially vaporized, and dimethyl ether remains in liquid state, realizing efficient separation of the two, the liquefaction paddle is cooled to minus fifty degrees by the refrigeration device, gas propane is quickly liquefied, the gas contact area is increased through the spiral structure, the liquefaction efficiency is improved, the contact area between the downward moving gas propane and the liquefaction paddle gradually increases due to the shape of the conical spiral, the diameter of the spiral structure gradually expands from the top to the bottom, the surface area of the spiral blade decreases with height and increases, the contact area between the gas and the liquefaction paddle gradually increases at different height sections, the effective contact path is prolonged, and the collision probability of gas molecules and the cold surface is improved.

[0015] 2) The main shaft drives the paddles to stir the liquid in the removal bin, so that heating is more uniform, propane vaporization is accelerated, the rotation speed of the liquefaction paddle is accelerated by adjusting the rotation speed of the motor, liquid propane is thrown off by centrifugal force, and the collection efficiency is improved.

[0016] 3) The lifting rods drive the scraper ring to slide along the inner wall of the liquefaction bin, residual liquid propane is removed, material loss is reduced, the scraper ring bottom is designed to be in a slope and fit the inner wall, and the cleaning effect is enhanced.

[0017] 4) The main shaft simultaneously drives the paddles of the removal bin and the liquefaction paddle, the mechanical structure is simplified, the failure rate is reduced, the gear and the lifting rod are engaged, the scraper ring is automatically lifted, and manual intervention is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1A three-dimensional structure schematic view of a dimethyl ether removal device in the embodiment of the present application;

[0019] Figure 2 A disassembled view of the separation tank and the scraping ring in the embodiment of the present application;

[0020] Figure 3 An enlarged view of A part in the embodiment of the present application; Figure 3

[0021] Figure 4 A left view of the separation tank and the scraping ring after disassembled in the embodiment of the present application.

[0022] In the figure: 1, the removal tank; 2, the propane discharge pipe; 3, the dimethyl ether feed pipe; 4, the dimethyl ether discharge pipe; 5, the liquefaction bin; 6, the removal bin; 7, the thermal insulation plate; 8, the connecting pipe groove; 9, the one-way valve; 10, the liquefaction paddle; 11, the butt joint pipe; 12, the main shaft; 13, the motor; 14, the paddle; 15, the scraping ring; 16, the lifting rod; 17, the fixed block; 18, the gear; 19, the motor; 20, the gear slot. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0024] Embodiment one

[0025] In combination with Figure 1 - Figure 4 , a dimethyl ether removal device, comprising a removal tank 1, a removal bin 6 is arranged at the bottom of the inside of the removal tank 1, a liquefaction bin 5 is arranged at the top of the inside of the removal tank 1, a thermal insulation plate 7 is fixedly connected between the removal bin 6 and the liquefaction bin 5 in the inside of the removal tank 1, a dimethyl ether discharge pipe 4 is fixedly connected to the bottom of the outer surface of the removal tank 1, a dimethyl ether feed pipe 3 is fixedly connected to the top of the dimethyl ether discharge pipe 4 of the outer surface of the removal tank 1, a propane discharge pipe 2 is fixedly connected to the top of the dimethyl ether feed pipe 3 of the outer surface of the removal tank 1, a liquefaction paddle 10 is rotatably connected in the inside of the liquefaction bin 5, six connecting pipe grooves 8 are equidistantly arranged in the wall of the removal tank 1 and communicate with the removal bin 6 and the liquefaction bin 5, and one-way valves 9 are fixedly connected to both ends of the connecting pipe grooves 8.

[0026] ​In actual operation, the initial temperature of the removal bin 6 is minus fifty degrees, the propane mixed with dimethyl ether is injected into the inside of the removal bin 6 through the dimethyl ether feeding pipe 3, then the external heating jacket is arranged on the outer surface of the removal tank 1 and located at the position of the removal bin 6, the butt joint pipe 11 is connected with the external refrigerating device, the refrigerating device is started, the liquefied paddle 10 is cooled to minus fifty degrees, the heating jacket is started to heat the removal bin 6 to the temperature interval of minus forty-two degrees to minus twenty-four point eight degrees, which has reached the boiling point of propane but not the boiling point of dimethyl ether, therefore, at this time, the propane is vaporized and enters the inside of the liquefaction bin 5 through the six connecting pipe grooves 8, and at this time, the vaporized propane moves from top to bottom in the inside of the liquefaction bin 5 and adheres to the outer surface of the liquefied paddle 10, because the temperature of the liquefied paddle 10 is minus fifty degrees, the gaseous propane adhered to the liquefied paddle 10 is liquefied into liquid and then slides along the outer surface of the liquefied paddle 10 to the top of the thermal insulation plate 7.

[0027] Because the liquefied paddle 10 is in the overall conical spiral shape, the gaseous propane can be directly captured by the liquefied paddle 10 and liquefied during the descending process of the gaseous propane.

[0028] The liquefied paddle 10 is in the hollow state, the top of the liquefied paddle 10 is fixedly connected with the butt joint pipe 11 penetrating through the top of the removal tank 1, the butt joint pipe 11 is in communication with the liquefied paddle 10, and the liquefied paddle 10 is in the overall conical spiral shape.

[0029] Referring to Figure 2 and Figure 4 , the dimethyl ether discharging pipe 4 and the dimethyl ether feeding pipe 3 are in communication with the inside of the removal bin 6, and the propane discharging pipe 2 is in communication with the inside of the liquefaction bin 5.

[0030] Referring to Figure 2 , the inside of the removal bin 6 is rotationally connected with the main shaft 12, and the outer surface of the main shaft 12 is fixedly connected with the two paddle blades 14.

[0031] Specifically, the motor 13 is started to drive the main shaft 12 to slowly rotate, thereby driving the two paddle blades 14 to slowly rotate, so that the propane can be stirred during the heating process, thereby achieving the purpose of uniformly heating the propane. The rotation of the main shaft 12 also drives the liquefied paddle 10 to slowly rotate. When the propane in the inside of the removal bin 6 is completely vaporized, the rotation speed of the output shaft of the motor 13 is increased, thereby increasing the rotation speed of the liquefied paddle 10, so that the liquid propane adhered to the surface of the liquefied paddle 10 can be directly thrown away from the liquefied paddle 10 due to the centrifugal force, thereby accelerating the collection of the liquid propane.

[0032] Referring to Figure 2 , the top of the main shaft 12 is fixedly connected with the bottom of the liquefied paddle 10, the bottom of the removal tank 1 is fixedly connected with the motor 13, and the output shaft of the motor 13 is fixedly connected with the main shaft 12.

[0033] Referring to Figure 2 And Figure 3 The inner wall of the liquefaction bin 5 is slidably connected with a scraper ring 15, the top of the scraper ring 15 is symmetrically fixedly connected with two lifting rods 16, the lifting rods 16 penetrate through the top of the removal tank 1, the top of the removal tank 1 is symmetrically fixedly connected with two pairs of fixed blocks 17, the inside of the two pairs of fixed blocks 17 are rotatably connected with gears 18, and the outer surfaces of the two lifting rods 16 are provided with tooth grooves 20.

[0034] Specifically, the motors 19 are started, the rotating directions of the output shafts of the two motors 19 are opposite, the two gears 18 are synchronously and reversely rotated, the two lifting rods 16 are synchronously lowered through the meshing with the tooth grooves 20, the scraper ring 15 is lowered, and the liquid propane that is thrown by the liquefaction paddle 10 to the inner wall of the liquefaction bin 5 can be scraped off the inner wall of the liquefaction bin 5, so that the collection efficiency of the liquid propane is further improved.

[0035] Referring to Figure 4 The gear 18 is meshed with the tooth groove 20, the lifting rod 16 is slidably connected with the removal tank 1, and the bottom of the scraper ring 15 is provided as a slope.

[0036] Referring to Figure 3 The sides of the two pairs of fixed blocks 17 are fixedly connected with the motors 19, the output shafts of the motors 19 penetrate through the sides of the fixed blocks 17 and are fixedly connected with the gears 18.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dimethyl ether removal device, comprising a removal tank (1), characterized in that: The desorption tank (1) has a desorption chamber (6) at the bottom and a liquefaction chamber (5) at the top. A heat insulation plate (7) is fixedly connected inside the desorption tank (1) between the desorption chamber (6) and the liquefaction chamber (5). A dimethyl ether discharge pipe (4) is fixedly connected to the bottom of the outer surface of the desorption tank (1). A dimethyl ether inlet pipe (3) is fixedly connected to the top of the dimethyl ether discharge pipe (4) on the outer surface of the desorption tank (1). A propane discharge pipe (2) is fixedly connected to the top of the dimethyl ether inlet pipe (3) on the outer surface of the desorption tank (1). A liquefaction paddle (10) is rotatably connected inside the liquefaction chamber (5). Six connecting pipe grooves (8) connecting the desorption chamber (6) and the liquefaction chamber (5) are equidistantly opened inside the wall of the desorption tank (1). One-way valves (9) are fixedly connected to both ends of the connecting pipe grooves (8).

2. The dimethyl ether removal device according to claim 1, characterized in that: The liquefaction paddle (10) is hollow. The top of the liquefaction paddle (10) is fixedly connected to the top of the desorption tank (1). The connecting pipe (11) is connected to the liquefaction paddle (10). The liquefaction paddle (10) is in the shape of a conical spiral.

3. The dimethyl ether removal device according to claim 1, characterized in that: The dimethyl ether discharge pipe (4) and the dimethyl ether inlet pipe (3) are both connected to the interior of the removal chamber (6), and the propane discharge pipe (2) is connected to the interior of the liquefaction chamber (5).

4. The dimethyl ether removal device according to claim 1, characterized in that: The removal chamber (6) is rotatably connected to a main shaft (12), and two blades (14) are fixedly connected to the outer surface of the main shaft (12).

5. The dimethyl ether removal device according to claim 4, characterized in that: The top of the main shaft (12) is fixedly connected to the bottom of the liquefied paddle (10), and a motor (13) is fixedly connected to the bottom of the descaling tank (1). The output shaft of the motor (13) is fixedly connected to the main shaft (12).

6. The dimethyl ether removal device according to claim 1, characterized in that: The inner wall of the liquefaction tank (5) is slidably connected to a scraper ring (15). Two lifting rods (16) are symmetrically fixed to the top of the scraper ring (15). The lifting rods (16) penetrate the top of the removal tank (1). Two pairs of fixing blocks (17) are symmetrically fixed to the top of the removal tank (1). Gears (18) are rotatably connected inside the two pairs of fixing blocks (17). The outer surfaces of the two lifting rods (16) are provided with tooth grooves (20).

7. The dimethyl ether removal device according to claim 6, characterized in that: The gear (18) meshes with the tooth groove (20), the lifting rod (16) is slidably connected to the removal tank (1), and the bottom of the scraper ring (15) is set with an inclined surface.

8. The dimethyl ether removal device according to claim 6, characterized in that: Motors (19) are fixedly connected to the sides of both pairs of fixed blocks (17). The output shaft of the motor (19) passes through the side of the fixed block (17) and is fixedly connected to the gear (18).

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