Separating tower for tetrafluoroethane production

Abstract

The utility model discloses a separating tower for tetrafluoroethane production, which comprises a separating tower main body, a waste liquid collecting pipe is fixed at the bottom of the separating tower main body, an inlet end pipe is fixed on one side of the separating tower main body, and a plurality of separating and collecting end pipes are fixed on the other side of the separating tower main body. Electromagnetic valves are arranged on the inner sides of the joints between the separation tower main body and the inlet end pipe and between the separation tower main body and the separation and collection end pipe, and a waste liquid collection bin, a tertiary separation bin, a secondary separation bin and a primary separation bin are arranged in the separation tower main body. When separation operation is continued in the secondary separation bin, another part of liquid medium which needs to be newly separated and contains tetrafluoroethane is conveyed into the primary separation bin, and primary separation operation is carried out again in the primary separation bin along with separation in the secondary separation bin; the overall waiting time of separation is shortened, and the separation efficiency of tetrafluoroethane is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of separation tower, specifically is a separation tower for tetrafluoroethane production. BACKGROUND

[0002] Tetrafluoroethane is HFC material, because tetrafluoroethane does not destroy ozone layer completely, is the environmental protection refrigerant that current world majority country approves and recommends using, also is mainstream environmental protection refrigerant, is widely used in the initial installation and the readdition in the maintenance process on new refrigeration air conditioning equipment;

[0003] Tetrafluoroethane needs to use separation tower and other associated substances to separate when producing, and the separation tower is a kind of deep cryogenic equipment for separating single-component gaseous and liquid products from multi-component gas, it is usually used to separate air, natural gas, coke oven gas, water gas, synthetic ammonia relaxation gas and various cracking gas etc.

[0004] However, the existing tetrafluoroethane is separated by separation tower, and the subsequent tetrafluoroethane separation can be continued only after the previous separation operation is completed, so the waiting time is long, and the tetrafluoroethane separation efficiency is low;Therefore, it does not meet the existing demand, and a separation tower for tetrafluoroethane production is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of separation tower for tetrafluoroethane production to solve the problem that tetrafluoroethane is separated by separation tower, and the subsequent tetrafluoroethane separation can be continued only after the previous separation operation is completed, so the waiting time is long, and the tetrafluoroethane separation efficiency is low etc.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of separation tower for tetrafluoroethane production, including separation tower main part, the bottom of the separation tower main part is fixed with waste liquid collection pipe, one side of the separation tower main part is fixed with entering end pipe, the other side of the separation tower main part is fixed with multiple separation collection end pipes, the inside of the separation tower main part and entering end pipe, separation collection end pipe connection place are equipped with solenoid valve, the inside of the separation tower main part is equipped with waste liquid collection bin, three separation bin, secondary separation bin and primary separation bin, waste liquid collection bin and three separation bin, three separation bin and secondary separation bin, secondary separation bin and primary separation bin are all equipped with baffle, and the baffle is detachably fixed with the inner wall of separation tower main part.

[0007] Preferably, the top of the baffle is equipped with converging channel, and the middle of the converging channel is concave downward to make the converging channel present inverted conical shape.

[0008] Preferably, the inside of the partition plate is provided with a connecting pipe, the top end of the connecting pipe is located at the center of the flow groove and the axis is vertically downward, the bottom end of the connecting pipe is flush with the bottom surface of the partition plate, and the inside of the top end of the connecting pipe is provided with an electromagnetic check valve.

[0009] Preferably, the connecting pipe comprises an inlet pipe, a conveying connecting pipe and an outlet pipe, and the inlet pipe and the outlet pipe are parallel to each other.

[0010] Preferably, the two ends of the conveying connecting pipe are arc-shaped and the conveying connecting pipe is inclined as a whole.

[0011] Preferably, the top end of the connecting pipe is provided with a heating plate outside, and the inside of the heating plate is provided with an electric heating wire.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model discloses a primary separation bin, a secondary separation bin and a tertiary separation bin are arranged in the separation tower body respectively, four fluorine ethane and its concomitant are separated in stages, after primary separation, the separated material is transferred to the secondary separation bin, at this time, the primary separation bin can continue to separate raw materials, the separation waiting time in the whole process is shortened, and the separation efficiency of four fluorine ethane is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the whole structure schematic view of the utility model;

[0015] Fig. 2 It is the inside structure schematic view of the separation tower body of the utility model;

[0016] Fig. 3 It is the structure sectional view of the separation tower body of the utility model;

[0017] Fig. 4 It is the structure sectional view of the partition plate of the utility model.

[0018] In the drawing: 1, separation tower body;2, inlet end pipe;3, separation collection end pipe;4, waste liquid collection pipe;5, waste liquid collection bin;6, tertiary separation bin;7, secondary separation bin;8, primary separation bin;9, electromagnetic valve;10, partition plate;11, flow groove;12, connecting pipe;13, heating plate. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0020] As Figs. 1 to 4As shown, a kind of separating tower for tetrafluoroethane production, the bottom of separating tower main body 1 is fixed with waste liquid collection pipe 4, one side of separating tower main body 1 is fixed with entering end pipe 2, the other side of separating tower main body 1 is fixed with multiple separating collection end pipe 3, the inner side of the connecting place of separating tower main body 1 with entering end pipe 2, separating collection end pipe 3 is equipped with electromagnetic valve 9, the inside of separating tower main body 1 is equipped with waste liquid collection bin 5, three-time separating bin 6, secondary separating bin 7 and primary separating bin 8, and the partition 10 is equipped between waste liquid collection bin 5 and three-time separating bin 6, three-time separating bin 6 and secondary separating bin 7, secondary separating bin 7 and primary separating bin 8, and the partition 10 is detachably fixed with the inner wall of separating tower main body 1, the inside of separating tower main body 1 is isolated into waste liquid collection bin 5, three-time separating bin 6, secondary separating bin 7 and primary separating bin 8 by three partitions 10, and the separation efficiency of tetrafluoroethane is improved by using three-time separating bin 6, secondary separating bin 7 and primary separating bin 8 to carry out hierarchical separation on tetrafluoroethane and its accompanying substances, to shorten the waiting time required for separation.

[0021] The top of partition 10 is equipped with converging chute 11, the middle of converging chute 11 is recessed downward to make converging chute 11 present inverted conical shape, and the liquid substance formed by tetrafluoroethane and its accompanying substances is accumulated to the middle of converging chute 11, so as to concentrate the remaining liquid to the next layer for transportation after separation.

[0022] The inside of partition 10 is equipped with connecting pipe 12, the top end of connecting pipe 12 is located at the center of converging chute 11 and its axis is vertically downward, the bottom end of connecting pipe 12 is flush with the bottom surface of partition 10, the inside of the top end of connecting pipe 12 is equipped with electromagnetic check valve, connecting pipe 12 includes entering pipe, transportation connecting pipe and output pipe, the entering pipe and output pipe are parallel to each other, the two ends of transportation connecting pipe are arc-shaped curved, and the whole transportation connecting pipe is inclined, the liquid substance in converging chute 11 is transported to the direction of the inner wall of separating tower main body 1 by connecting pipe 12, so that the liquid substance slides down along the inner wall of separating tower main body 1, and the falling speed of the substance is slowed down.

[0023] The outside of the top end of connecting pipe 12 is equipped with heating plate 13, the inside of heating plate 13 is equipped with electric heating wire, the liquid substance in converging chute 11 is heated and kept constant temperature by heating plate 13, so that non-electric substance in liquid substance is gasified and separated from liquid medium.

[0024] Working principle: first into the end tube 2 will be mixed with tetrafluoroethane liquid material into the primary separation warehouse 8, liquid material into the primary separation warehouse 8 after accumulation in the primary separation warehouse 8 bottom baffle 10 above, then connect the heating plate 13 inside the baffle 10 power and start, heating plate 13 power after heating the liquid material, until the heating plate 13 temperature reaches the boiling point of a certain substance in the liquid medium, at this time the heating plate 13 remains the same temperature, until the liquid material to reach the boiling point of the substance is completely separated from the liquid material and from the separation collection end tube 3 above the baffle 10 from the separation tower main body 1, after separation open the top end of the electromagnetic check valve connected pipe 12, so that the remaining liquid material through the connecting pipe 12 into the secondary separation warehouse 7, in the secondary separation warehouse 7 continue to separate, at this time can be transported into another need to separate the liquid medium inside the primary separation warehouse 8, with the secondary separation warehouse 7 in the separation of the primary separation warehouse 8 again in the primary separation operation, reduce the overall waiting time of separation, provide the separation efficiency of tetrafluoroethane.

[0025] It is apparent for a person skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

Claims

1. A separation column for tetrafluoroethane production, comprising a separation column main body (1), characterized in that: The bottom of the separation tower body (1) is fixed with a waste liquid collecting pipe (4), one side of the separation tower body (1) is fixed with an entering end pipe (2), the other side of the separation tower body (1) is fixed with a plurality of separation collecting end pipes (3), the inside of the connection place of the separation tower body (1) with the entering end pipe (2) and the separation collecting end pipe (3) is provided with an electromagnetic valve (9), the inside of the separation tower body (1) is provided with a waste liquid collecting bin (5), a third separation bin (6), a secondary separation bin (7) and a primary separation bin (8), the waste liquid collecting bin (5), the third separation bin (6), the secondary separation bin (7) and the primary separation bin (8) are all provided with a partition plate (10), and the partition plate (10) is detachably fixed with the inner wall of the separation tower body (1).

2. The separation column for producing tetrafluoroethane according to claim 1, characterized in that: The top of the partition plate (10) is provided with a flow converging groove (11), and the middle of the flow converging groove (11) is recessed downward, so that the flow converging groove (11) is in the shape of an inverted cone.

3. The separation column for producing tetrafluoroethane according to claim 2, characterized in that: The inside of the partition plate (10) is provided with a connecting pipe (12), the top end of the connecting pipe (12) is located at the center of the flow converging groove (11) and the axis is vertically downward, the bottom end of the connecting pipe (12) is flush with the bottom surface of the partition plate (10), and the inside of the top end of the connecting pipe (12) is provided with an electromagnetic one-way valve.

4. The separation column for producing tetrafluoroethane according to claim 3, wherein: The connecting pipe (12) comprises an entering pipe, a conveying connecting pipe and an output pipe, and the entering pipe and the output pipe are parallel to each other.

5. The separation column for producing tetrafluoroethane according to claim 4, wherein: Both ends of the conveying connecting pipe are arc-shaped and curved, and the conveying connecting pipe is inclined as a whole.

6. The separation column for producing tetrafluoroethane according to claim 5, wherein: The top end of the connecting pipe (12) is provided with a heating plate (13), and the inside of the heating plate (13) is provided with an electric heating wire.

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