CN204783671U - Novel liquid ring vacuum pump system - Google Patents

Abstract

The utility model relates to a novel liquid ring vacuum pump system, comprising vacuum equipment, a liquid ring vacuum pump, a gas-liquid separation tank, a condenser, a high position tank, and an exhaust gas absorption system. The high position tank is sequentially provided with an overflow port and a return port from top to bottom , liquid inlet; the vacuum equipment is connected to the suction port of the liquid ring vacuum pump through the vacuum gas phase tube, the gas-liquid discharge port of the liquid ring vacuum pump is connected to the inlet of the gas-liquid separation tank, and the gas-liquid separation tank outlet is connected to the tail gas absorption system ;The process liquid in the process system enters the gas-liquid separation tank through the pipeline, and the separated liquid enters the high-level tank through the circulating pump and the condenser in turn. The overflow port of the high-level tank is connected with the process system, and the return port of the high-level tank is connected with the gas-liquid The separation tanks are connected, and the liquid outlet of the head tank is connected with the liquid inlet of the liquid ring vacuum pump. By replacing circulating water with process liquid, waste water is avoided and waste water treatment costs are reduced; process liquid absorbs process vacuum gas, reduces air pollution, and recycles process materials.

Description

A New Liquid Ring Vacuum Pump System

technical field

The utility model relates to a vacuum pump system, in particular to a novel liquid ring vacuum pump system.

Background technique

Chemical plants often use water ring vacuum pumps to obtain vacuum. This process system is mainly to connect pipes from the equipment required for vacuum to the vacuum pump, and to provide circulating water to the vacuum pump, and use the centrifugal force of the circulating water to drive the gas phase to produce vacuum. The gas-water mixture discharged from the vacuum pump passes through the gas-water separation tank, the gas goes to the tail gas adsorption system, and the circulating water polluted by the process gas goes to the sewage treatment device.

The disadvantages of the existing water ring vacuum system are: 1. The consumption of circulating water is large, which increases the utility cost of the device; 2. The circulating water polluted by the process gas after gas-water separation needs to be treated with wastewater, which increases the cost of wastewater treatment of the device; 3. Process materials dissolved in circulating water are not recycled, increasing the consumption of process materials.

Utility model content

The purpose of the utility model is to provide a novel liquid ring vacuum pump system which is green, environment-friendly and low in cost.

In order to achieve the above object, the utility model provides the following technical solutions:

A new liquid ring vacuum pump system, including vacuum equipment, a liquid ring vacuum pump, a gas-liquid separation tank, a condenser, an elevated tank, and an exhaust gas absorption system. The elevated tank is sequentially provided with an overflow port, a return port, liquid inlet;

The vacuum equipment is connected to the suction port of the liquid ring vacuum pump through the vacuum gas phase tube, the gas-liquid discharge port of the liquid ring vacuum pump is connected to the inlet of the gas-liquid separation tank, and the gas outlet of the gas-liquid separation tank is connected to the tail gas absorption system;

The process liquid in the process system enters the gas-liquid separation tank through the pipeline, and the liquid separated by the gas-liquid separation tank sequentially passes through the circulating pump and the condenser and enters the head tank, and the overflow port of the head tank is connected with the process system. The return port of the elevated tank is connected with the gas-liquid separation tank, and the liquid outlet of the elevated tank is connected with the liquid inlet of the liquid ring vacuum pump.

Preferably, the gas outlet of the gas-liquid separation tank is arranged on the top of the tank.

Preferably, a switching valve is provided between the overflow port of the elevated tank and the process system.

The beneficial effects of the utility model are:

1. The process liquid material replaces the circulating water, reducing the cost of public works for the installation. 2. The process liquid material replaces the circulating water to avoid the generation of waste water and reduce the cost of waste water treatment. 3. The process liquid material absorbs process vacuum gas, reduces air pollution and recycles process materials.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model is further described in conjunction with accompanying drawing 1:

A new type of liquid ring vacuum pump system, including vacuum equipment 1, liquid ring vacuum pump 2, gas-liquid separation tank 3, condenser 4, high level tank 5, tail gas absorption system 6, the high level tank 5 is sequentially arranged with Overflow port, return port, liquid inlet;

The vacuum device 1 is connected to the suction port of the liquid ring vacuum pump 2 through a vacuum gas phase tube, the gas-liquid outlet of the liquid ring vacuum pump 2 is connected to the inlet of the gas-liquid separation tank 3, and the gas outlet of the gas-liquid separation tank 3 is connected to the tail gas The absorption system 6 is connected;

The process liquid in the process system 7 enters the gas-liquid separation tank 3 through the pipeline, and the liquid separated by the gas-liquid separation tank 3 enters the head tank 5 through the circulation pump 8 and the condenser 4 successively, and the overflow of the head tank 5 The orifice is connected to the process system 7 , the return port of the head tank 5 is connected to the gas-liquid separation tank 3 , and the liquid outlet of the head tank 5 is connected to the liquid inlet of the liquid ring vacuum pump 2 .

The gas outlet of the gas-liquid separation tank 3 is arranged on the top of the tank.

An on-off valve is set between the overflow port of the elevated tank 5 and the process system 7 .

The working principle of the utility model: the process gas from the vacuum equipment 1 is connected to the liquid ring vacuum pump 2 through the vacuum gas phase pipe, the gas and liquid are mixed from the gas and liquid outlet of the liquid ring vacuum pump 2 to the gas and liquid separation tank 3, and the gas phase is separated from the gas and liquid Tank 3 top to tail gas adsorption system 6. The liquid phase goes through the circulating pump 8 and the condenser 4 to the liquid high level tank 5. An overflow port is set at the high liquid level of the high level tank 5, and a switch valve is set in the pipeline to return to the process system 7. When the liquid level of the gas-liquid separation tank 3 reaches the upper limit, the switch valve is opened from the closed state, and the process liquid flows to the process system 7, and the gas The liquid level of the liquid separation tank 3 returns to the normal state range, and the on-off valve is closed. A reflux port is set at the second highest level of the liquid level in the upper tank 5, and the process liquid returns to the gas-liquid separation tank 3. A liquid outlet is set at the lower level of the liquid level of the upper tank 5, and reaches the liquid ring vacuum pump 2 to replace circulating water and absorb vacuum gas without generating waste water. The process liquid that absorbs the process gas is sent to the process system to reduce material discharge, protect the atmospheric environment, and recycle process materials.

The utility model has been described as an example in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as the method concept and technical solution of the utility model are used for this insubstantial improvement, or without improvement Directly applying the ideas and technical solutions of the utility model to other occasions falls within the protection scope of the utility model.

Claims (3)

1. A new type of liquid ring vacuum pump system, characterized in that it includes vacuum equipment (1), liquid ring vacuum pump (2), gas-liquid separation tank (3), condenser (4), elevated tank (5), exhaust gas absorption In the system (6), the elevated tank (5) is sequentially provided with an overflow port, a return port, and a liquid inlet port from top to bottom; The vacuum equipment (1) is connected to the suction port of the liquid ring vacuum pump (2) through a vacuum gas phase tube, and the gas-liquid discharge port of the liquid ring vacuum pump (2) is connected to the inlet of the gas-liquid separation tank (3). The gas outlet of the separation tank (3) is connected with the tail gas absorption system (6); The process liquid in the process system (7) enters the gas-liquid separation tank (3) through the pipeline, and the liquid separated by the gas-liquid separation tank (3) enters the high level tank through the circulation pump (8) and the condenser (4) in sequence (5), the overflow port of the elevated tank (5) is connected to the process system (7), the return port of the elevated tank (5) is connected to the gas-liquid separation tank (3), and the liquid outlet of the elevated tank (5) The port is connected with the liquid inlet port of the liquid ring vacuum pump (2). 2. The novel liquid ring vacuum pump system according to claim 1, characterized in that: the gas outlet of the gas-liquid separation tank (3) is set on the top of the tank. 3. The new liquid ring vacuum pump system according to claim 1, characterized in that: an on-off valve is set between the overflow port of the elevated tank (5) and the process system (7).