A caustic wash tower flushing device

Abstract

The utility model provides a kind of caustic washing tower flushing device, including caustic washing tower, cleaning tank and alkali pump;The caustic washing tower and cleaning tank are connected by caustic washing tower lower liquid pipeline, the caustic washing tower and alkali pump are connected by alkali pump outlet pipeline, the cleaning tank and alkali pump are connected by cleaning tank outlet pipeline;The cleaning tank top is equipped with production water pipeline, side part is equipped with thermometer and liquid level meter respectively, inside is equipped with steam coil pipe, the caustic washing tower lower liquid pipeline is equipped with cut-off valve.The utility model injects production water into cleaning tank, opens regulating valve to heat production water in cleaning tank, starts alkali pump and injects cleaning tank hot water to caustic washing tower top, from caustic washing tower bottom to cleaning tank by itself, and the hot water is circulated by alkali pump to clean caustic washing tower, so as to improve caustic washing tower cleaning efficiency and effect.

Description

Technical Field

[0001] This utility model belongs to the field of vinyl chloride synthesis technology and relates to an alkaline washing tower flushing device. Background Technology

[0002] In the acetylene-based vinyl chloride synthesis process, acetylene is mixed with hydrogen chloride, and the mixture enters the vinyl chloride converter to react and produce vinyl chloride, as well as unreacted acetylene and hydrogen chloride. The gas phase exiting the converter first enters a water washing tower and an alkali washing tower to remove hydrogen chloride and other acidic substances. After compression, dehydration and drying, and distillation, qualified vinyl chloride products are produced. In the alkali washing process, sodium hydroxide is used to absorb hydrogen chloride gas and react to produce sodium chloride. After long-term operation of the alkali washing tower, sodium chloride will scale on the packing and tower wall, affecting the operation of the alkali washing tower. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the prior art by providing an alkaline washing tower flushing device, which solves the problem of sodium chloride scaling on the packing and tower wall, affecting the operation of the packing and alkaline washing tower.

[0004] Therefore, the present invention adopts the following technical solution: An alkaline washing tower flushing device includes an alkaline washing tower, a washing tank, and an alkaline pump; The alkaline washing tower and the cleaning tank are connected by the alkaline washing tower liquid outlet pipe, the alkaline washing tower and the alkaline pump are connected by the alkaline pump liquid outlet pipe, and the cleaning tank and the alkaline pump are connected by the cleaning tank liquid outlet pipe. The cleaning tank is equipped with a production water pipe at the top, a thermometer and a level gauge on the side, and a steam coil inside.

[0005] The liquid pipeline below the alkali washing tower is equipped with a shut-off valve.

[0006] The steam coil is equipped with a first regulating valve.

[0007] The production water pipeline is equipped with a second regulating valve.

[0008] The alkali pump outlet pipeline is equipped with a third regulating valve.

[0009] The beneficial effects of this utility model are as follows: In use, this utility model involves injecting production water into the cleaning tank, opening the regulating valve to heat the production water in the cleaning tank, starting the alkali pump to inject the hot water from the cleaning tank into the top of the alkali washing tower, and allowing it to flow by gravity from the bottom of the alkali washing tower into the cleaning tank. The hot water is then circulated by the alkali pump to clean the alkali washing tower, thereby improving the cleaning efficiency and effect of the alkali washing tower. It also features low manufacturing cost and easy maintenance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the system structure of this utility model.

[0011] In the diagram, 1-alkali washing tower, 2-alkali washing tower lower liquid pipeline, 3-shut-off valve, 4-thermometer, 5-first regulating valve, 6-steam coil, 7-second regulating valve, 8-production water pipeline, 9-alkali pump outlet pipeline, 10-third regulating valve, 11-washing tank, 12-level gauge, 13-washing tank outlet pipeline, 14-alkali pump. Detailed Implementation

[0012] The technical solution of this utility model will be described below with reference to the accompanying drawings and implementation methods.

[0013] like Figure 1 As shown, an alkaline washing tower flushing device includes an alkaline washing tower 1, a cleaning tank 11 and an alkaline pump 14; the alkaline washing tower 1 and the cleaning tank 11 are connected by an alkaline washing tower lower liquid pipe 2, the alkaline washing tower 1 and the alkaline pump 14 are connected by an alkaline pump outlet liquid pipe 9, and the cleaning tank 11 and the alkaline pump 14 are connected by a cleaning tank outlet liquid pipe 13. The top of the cleaning tank 11 is equipped with a production water pipe 8, the side is equipped with a thermometer 4 and a level gauge 12, and the inside is equipped with a steam coil 6.

[0014] The liquid discharge pipeline 2 of the alkali washing tower is equipped with a shut-off valve 3, which remotely controls the liquid discharge from the alkali washing tower 1.

[0015] The steam coil 6 is equipped with a first regulating valve 5. In this embodiment, the first regulating valve 5 is interlocked with the thermometer 4 to control the production water temperature at 50°C. The production water pipeline 8 is equipped with a second regulating valve 7. In this embodiment, the second regulating valve 7 is interlocked with the level gauge 12 to control the liquid level in the cleaning tank 11 at 50%. The alkali pump outlet pipeline 9 is equipped with a third regulating valve 10. The third regulating valve 10 is interlocked with the level gauge 12 to control the liquid level in the cleaning tank 11 at 50%.

[0016] In the process of using this utility model, production water is injected into the cleaning tank 11. When the liquid level in the cleaning tank 11 reaches 70%, the alkali pump 14 is started, the first regulating valve 5 is opened to heat the production water in the cleaning tank 11, and the alkali pump 14 is started to inject the hot water in the cleaning tank 11 into the top of the alkali washing tower 1. The hot water flows from the bottom of the alkali washing tower 1 to the cleaning tank 11 by gravity. The hot water is circulated and cleaned by the alkali pump 14.

Claims

1. A flushing device for an alkaline washing tower, characterized in that, Includes an alkaline washing tower (1), a washing tank (11), and an alkaline pump (14). The alkaline washing tower (1) and the cleaning tank (11) are connected by the alkaline washing tower lower liquid pipe (2), the alkaline washing tower (1) and the alkaline pump (14) are connected by the alkaline pump outlet pipe (9), and the cleaning tank (11) and the alkaline pump (14) are connected by the cleaning tank outlet pipe (13). The cleaning tank (11) is equipped with a production water pipe (8) at the top, a thermometer (4) and a level gauge (12) on the side, and a steam coil (6) inside.

2. The alkali washing tower flushing device according to claim 1, characterized in that, The liquid pipeline (2) under the alkaline washing tower is equipped with a shut-off valve (3).

3. The alkali washing tower flushing device according to claim 1, characterized in that, The steam coil (6) is equipped with a first regulating valve (5), which is interlocked with the thermometer (4).

4. The alkali washing tower flushing device according to claim 1, characterized in that, The production water pipeline (8) is equipped with a second regulating valve (7), which is interlocked with the level gauge (12).

5. The alkali washing tower flushing device according to claim 1, characterized in that, The alkali pump outlet pipe (9) is equipped with a third regulating valve (10), which is interlocked with the level gauge (12).

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