Vinyl chloride mixed gas cooler unfreezing device

Abstract

The utility model belongs to the field of vinyl chloride synthesis, and particularly discloses a vinyl chloride mixed gas cooler unfreezing device which comprises a heating tank, an inner coil pipe is arranged in the heating tank, a hot water feeding pipeline is connected to a water inlet pipeline of the inner coil pipe, a hot water return pipeline is connected to a water outlet pipeline of the inner coil pipe, and a water outlet pipeline of the inner coil pipe is connected with a water inlet pipeline of the hot water return pipeline. One side of the heating tank is connected with a delivery pump through a delivery pump liquid inlet pipeline, the delivery pump is connected with a vinyl chloride mixed gas cooler through a delivery pump liquid outlet pipeline, and the vinyl chloride mixed gas cooler is connected with the heating tank through a vinyl chloride mixed gas cooler liquid outlet pipeline; the brine is heated through the heating tank, then the heated brine is conveyed into the chloroethylene mixed gas cooler through the conveying pump to be unfrozen, and the device is simple in structure, low in manufacturing cost, convenient to use, easy to maintain and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of vinyl chloride synthesis, concretely relates to a vinyl chloride mixed gas cooler thawing device. BACKGROUND

[0002] The acetylene gas sent by the acetylene device passes through the blocking resolver, enters the acetylene cooler for cooling, is defogged by the defogger, is mixed with the hydrogen chloride sent by the hydrogen chloride device in the mixer, is cooled by the vinyl chloride mixed gas cooler, and the water in the mixed gas is removed, the gas phase enters the subsequent process, and the condensed water is combined with the hydrogen chloride to form hydrochloric acid, the freezing point of the hydrochloric acid is -18 DEG C, the temperature at the outlet of the vinyl chloride mixed gas cooler is controlled at about -16 DEG C, when the operation is improper, the temperature at the gas phase outlet of the vinyl chloride mixed gas cooler is lower than -18 DEG C, the hydrochloric acid is frozen and blocked in the vinyl chloride mixed gas cooler, the tube is blocked, the frozen vinyl chloride mixed gas cooler needs to be transported out, and is thawed naturally through the external temperature, the natural thawing time is long, and the production is affected. CONTENT

[0003] The utility model discloses a kind of vinyl chloride mixed gas cooler thawing devices, the structure is simple, manufacturing cost is low, convenient to use, easy maintenance, to solve the problem such as long time of vinyl chloride mixed gas cooler natural thawing.

[0004] In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] A kind of vinyl chloride mixed gas cooler thawing device, including heating tank, the inner coil pipe is equipped in the heating tank, hot water upwater pipe is connected on the water inlet pipe of the inner coil pipe, hot water backwater pipe is connected on the water outlet pipe of the inner coil pipe, the heating tank side is connected with delivery pump by delivery pump liquid inlet pipe, the delivery pump is connected with vinyl chloride mixed gas cooler by delivery pump liquid outlet pipe, the vinyl chloride mixed gas cooler is connected with heating tank by vinyl chloride mixed gas cooler lower liquid pipe.

[0006] Preferably, liquid level meter is arranged on the heating tank.

[0007] Preferably, sequentially adjusting valve and flowmeter are arranged on the delivery pump liquid outlet pipe.

[0008] Preferably, circulating water upwater pipe is connected on the water inlet pipe of the inner coil pipe, and circulating water backwater pipe is connected on the water outlet pipe of the inner coil pipe.

[0009] Preferably, valve is arranged on the circulating water backwater pipe, hot water backwater pipe, hot water upwater pipe and circulating water upwater pipe respectively.

[0010] The utility model has the advantages of:

[0011] The utility model discloses a heating tank carries out heating brine, then utilizes the delivery pump to deliver the brine of heating to the vinyl chloride mixed gas cooler and carries out thawing, and its simple structure, low in manufacturing cost, convenient to use, easy maintenance, long service life. The utility model discloses a heating tank 1 gathers the brine in the vinyl chloride mixed gas cooler 8, utilizes the delivery pump 4 to hit the brine into the vinyl chloride mixed gas cooler 8 and flows into the heating tank 1 after heat exchange, forms the circulation, utilizes the heat of inner coil 14 in the heating tank 1 to heat the brine and then thaws, heats the vinyl chloride mixed gas cooler 8 through hot brine and thaws, after thawing, circulates the water and cool down the brine, make the temperature of mixed gas cooler drop, guarantee the mixed gas cooler that thaws completely has the production state, and this technique can be widely used in vinyl chloride synthesis field. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] In the drawing: 1, heating tank, 2, liquid level meter, 3, delivery pump inlet pipeline, 4, delivery pump, 5, regulating valve, 6, flowmeter, 7, delivery pump outlet pipeline, 8, vinyl chloride mixed gas cooler, 9, vinyl chloride mixed gas cooler lower liquid pipeline, 10, circulating water return pipeline, 11, hot water return pipeline, 12, hot water up pipeline, 13, circulating water up pipeline, 14, inner coil. DETAILED DESCRIPTION

[0014] The utility model will be further described below in conjunction with the specific embodiment and the drawing:

[0015] As Figure 1 Shown in a kind of vinyl chloride mixed gas cooler thawing device, including heating tank 1, heating tank 1 is equipped with inner coil 14, hot water up pipeline 12 is connected on the water inlet pipeline of inner coil 14, hot water return pipeline 11 is connected on the water outlet pipeline of inner coil 14, heating tank 1 side is connected with delivery pump 4 by delivery pump inlet pipeline 3, delivery pump 4 is connected with vinyl chloride mixed gas cooler 8 by delivery pump outlet pipeline 7, vinyl chloride mixed gas cooler 8 is connected with heating tank 1 by vinyl chloride mixed gas cooler lower liquid pipeline 9, gather the brine in vinyl chloride mixed gas cooler 8 by heating tank 1, utilize delivery pump 4 to hit the brine into vinyl chloride mixed gas cooler 8 and flow into heating tank 1 after heat exchange, form circulation, utilize the heat of inner coil 14 in heating tank 1 to heat the brine and then thaw, heat vinyl chloride mixed gas cooler 8 through hot brine and thaw.

[0016] Heating tank 1 is equipped with liquid level meter 2, prevent heating tank 1 inside liquid too little or too much, avoid delivery pump 4 idling and heating tank 1 full liquid.

[0017] The delivery pump outlet pipeline 7 is provided with a regulating valve 5 and a flow meter 6 in sequence, which controls the flow of brine in the whole system. When the value displayed on the flow meter 6 is too large, the regulating valve 5 is adjusted to be smaller, and vice versa.

[0018] The inlet pipeline of the inner coil 14 is connected with a circulating water inlet pipeline 13, and the outlet pipeline of the inner coil 14 is connected with a circulating water return pipeline 10. The circulating water is introduced into the inner coil 14 through the circulating water inlet pipeline 13 to cool the brine, and the circulating water is discharged through the circulating water return pipeline 10, so as to form a closed loop for recycling, so that the temperature of the vinyl chloride mixed gas cooler 8 is lowered to ensure that the thawed mixed gas cooler has a production state.

[0019] The circulating water return pipeline 10, the hot water return pipeline 11, the hot water inlet pipeline 12 and the circulating water inlet pipeline 13 are respectively provided with valves, and the valves of the corresponding pipelines are closed when not in use.

[0020] In operation, first, the valves on the circulating water return pipeline 10 and the circulating water inlet pipeline 13 are closed, then hot water is introduced into the heating tank 1 through the hot water return pipeline 11 and the hot water inlet pipeline 12 to heat the heating tank 1, so that the brine in the vinyl chloride mixed gas cooler 8 flowing into the heating tank 1 through the lower liquid pipeline 9 of the vinyl chloride mixed gas cooler is heated by the heating tank 1, and then the heated brine is introduced into the vinyl chloride mixed gas cooler 8 through the pipeline by the delivery pump 4 to thaw, when the thawing is completed, the valves on the hot water return pipeline 11 and the hot water inlet pipeline 12 are closed, and the valves on the circulating water return pipeline 10 and the circulating water inlet pipeline 13 are opened, and the circulating water is introduced into the heating tank 1 to cool the brine, and then the cooled brine is introduced into the vinyl chloride mixed gas cooler 8 through the pipeline by the delivery pump 4 and the pipeline, so that the temperature of the vinyl chloride mixed gas cooler 8 is lowered to ensure that the thawed mixed gas cooler has a production state.

Claims

1. A vinyl chloride mixed gas cooler thawing device characterized by comprising: The utility model provides heating groove (1), be equipped with inner coil (14) in heating groove (1), be connected with hot water up water pipe (12) on the water inlet pipe of inner coil (14), be connected with hot water backwater pipe (11) on the water outlet pipe of inner coil (14), one side of heating groove (1) is connected with delivery pump (4) through delivery pump liquid inlet pipe (3), delivery pump (4) is connected with vinyl chloride mixed gas cooler (8) through delivery pump liquid outlet pipe (7), vinyl chloride mixed gas cooler (8) is connected with heating groove (1) through vinyl chloride mixed gas cooler lower liquid pipe (9).

2. A vinyl chloride mixed gas cooler thawing device according to claim 1, characterized in that: The heating groove (1) is provided with a liquid level meter (2).

3. A vinyl chloride mixed gas cooler thawing device according to claim 1, characterized in that: The delivery pump liquid outlet pipe (7) is provided with a flow meter (6) and a regulating valve (5) in sequence.

4. A vinyl chloride mixed gas cooler thawing device according to claim 1, characterized in that: The water inlet pipe of the inner coil (14) is connected with a circulating water up water pipe (13), and the water outlet pipe of the inner coil (14) is connected with a circulating water backwater pipe (10).

5. A vinyl chloride mixed gas cooler thawing device according to claim 4, characterized in that: Valves are respectively arranged on the circulating water backwater pipe (10), the hot water backwater pipe (11), the hot water up water pipe (12) and the circulating water up water pipe (13).

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