Automatic stabilizer adding system for methane chloride

Abstract

The utility model provides an automatic stabilizer adding system for methane chloride, which comprises a stabilizer storage tank and a methane chloride storage tank, and the stabilizer storage tank is provided with a stabilizer adding pipeline communicated with the methane chloride storage tank; the stabilizer adding pipeline is provided with a cut-off valve and a flowmeter, the methane chloride storage tank is provided with a liquid level sensor which is electrically connected with the cut-off valve to control the cut-off valve to be opened, and the cut-off valve is opened after the liquid level in the methane chloride storage tank is increased to a set height; the flow meter controls the flow of the stabilizer added at a time and is electrically connected with the stop valve, and the stop valve is closed after the set single-time adding amount is reached. The automatic stabilizer adding device has the beneficial effects that the stabilizer can be quickly and accurately added through automatic control, so that the production period is shortened, the production efficiency is improved, the stabilizer can be automatically added, the consistency and the stability of the quality of finished products can be ensured, the accuracy of adding the stabilizer is ensured, and the quality of the finished products is stabilized.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to an automatic stabilizer adding system for methane chloride. Background Art

[0002] The products of the methane chloride unit mainly include dichloromethane and chloroform. Since dichloromethane and chloroform are prone to decomposition and acidification during storage, stabilizers need to be added to the finished dichloromethane and chloroform products. In the methane chloride unit, the stabilizer used is isopentene liquid. Isopentene is a flammable liquid with a low flash point. Its vapor can form an explosive mixture with air and is very easy to burn and explode when exposed to open flames and high heat. Isopentene has anesthetic and irritating effects. Inhalation of high concentrations can quickly cause headaches, dizziness, tinnitus, weakness, nausea, tears, coughing, chest tightness and even difficulty breathing.

[0003] At present, the stabilizer is added manually. The operator uses a fixed glass container to hold the stabilizer liquid, manually adds it to the stabilizer adding tank of the finished product tank, and then opens the nitrogen valve at the stabilizer adding tank to blow the stabilizer into the finished product tank with nitrogen. During the adding process, the operator needs to operate on site, and there is unstable pressure control, which causes the stabilizer to splash from the stabilizer adding tank, causing people to inhale the stabilizer, which affects the health of the operator; during the addition, it is affected by the measurement error of the glass container, and the amount of stabilizer added is also inaccurate, affecting the product quality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the problem that the stabilizer is added manually by personnel, so the adding efficiency is low and it will affect the health of the operators is solved.

[0005] The utility model provides a stabilizer automatic adding system for methane chloride, comprising a stabilizer storage tank and a methane chloride storage tank, wherein the stabilizer storage tank is provided with a stabilizer adding pipeline connected to the methane chloride storage tank;

[0006] The stabilizer adding pipeline is provided with a cut-off valve and a flow meter, and the methane chloride storage tank is provided with a liquid level sensor electrically connected to the cut-off valve to control the cut-off valve to open, and the cut-off valve is opened after the liquid level in the methane chloride storage tank increases to a set height;

[0007] The flow meter controls the flow rate of the single addition of stabilizer and is electrically connected to the cut-off valve. The cut-off valve is closed after the set single addition amount is reached.

[0008] Furthermore, the stabilizer storage tank is a pressure vessel that can withstand the pressure of nitrogen and the saturated vapor pressure of the stabilizer.

[0009] Furthermore, the stabilizer storage tank is provided with a nitrogen supplementary pipeline so that the pressure in the stabilizer storage tank is always greater than the pressure in the methane chloride storage tank.

[0010] Furthermore, the stabilizer storage tank is provided with a pressure sensor for monitoring the pressure in the stabilizer storage tank.

[0011] Furthermore, the nitrogen replenishment pipeline is provided with a regulating valve to control the nitrogen replenishment amount.

[0012] Furthermore, the regulating valve is electrically connected to a pressure sensor, and the regulating valve is opened when the pressure sensor detects that the pressure in the stabilizer storage tank is lower than a set value.

[0013] As a preferred solution, the pressure between the stabilizer storage tank and the methane chloride storage tank is maintained at 0.1 to 0.2 MPa.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model relates to a device that can realize fast and accurate addition of stabilizer through automated control, thereby shortening the production cycle and improving production efficiency. It can realize self-controlled addition of stabilizer, and since the amount and timing of addition of stabilizer are accurately calculated according to the actual situation in the production process, the device can ensure the consistency and stability of the quality of the finished product, ensure the accuracy of the addition of stabilizer, and stabilize the quality of the finished product.

[0016] 2. The utility model reduces the frequency of direct contact between operators and stabilizers, thereby reducing the health risks that operators may face due to contact with stabilizers. Automatic control reduces dependence on operators, thereby saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0018] Figure 1 A schematic structural diagram of the utility model.

[0019] The reference numerals in the accompanying drawings are:

[0020] 1. Nitrogen replenishment pipeline, 2. Regulating valve, 3. Pressure sensor, 4. Stabilizer storage tank, 5. Shut-off valve, 6. Flow meter, 7. Methane chloride storage tank. DETAILED DESCRIPTION

[0021] To illustrate the features of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] Example:

[0023] See also Figure 1 The present embodiment provides an automatic stabilizer adding system for methane chloride, including a stabilizer storage tank 4 and a methane chloride storage tank 7, wherein the stabilizer storage tank 4 is provided with a stabilizer adding pipeline connected to the methane chloride storage tank 7; the stabilizer adding pipeline is provided with a cut-off valve 5 and a flow meter 6, and the methane chloride storage tank 7 is provided with a liquid level sensor electrically connected to the cut-off valve 5 to control the cut-off valve 5 to open, and the cut-off valve 5 is opened after the liquid level in the methane chloride storage tank 7 increases to a set height; the flow meter 6 controls the flow rate of a single stabilizer addition and is electrically connected to the cut-off valve 5, and the cut-off valve 5 is closed after the set single addition amount is reached. Through the above system, when the liquid level in the methane chloride storage tank 7 reaches the upper limit, the weight of the finished product in the methane chloride storage tank 7 is calculated by the liquid level of the methane chloride storage tank 7, and the amount of stabilizer to be added to the methane chloride storage tank 7 is calculated accordingly. The stabilizer in the stabilizer storage tank 4 is added to the methane chloride storage tank 7 through the pressure difference. When the stabilizer addition amount is reached, the shut-off valve 5 is automatically closed to stop the stabilizer addition procedure, thereby realizing the self-controlled addition of the stabilizer.

[0024] Because the addition of stabilizer is driven by the pressure difference between the stabilizer storage tank 4 and the methane chloride storage tank 7, the stabilizer storage tank 4 must be a pressure vessel that can withstand the pressure of nitrogen and the saturated vapor pressure of the stabilizer, and ensure that the stabilizer storage tank 4 is equipped with a nitrogen replenishment pipeline 1 so that the pressure in the stabilizer storage tank 4 is always greater than the pressure in the methane chloride storage tank 7.

[0025] In summary, in this embodiment, a pressure sensor 3 for monitoring the pressure in the stabilizer storage tank 4 is provided in the stabilizer storage tank 4, and a regulating valve 2 is provided in the nitrogen replenishment pipeline 1 to control the nitrogen replenishment amount. The regulating valve 2 is electrically connected to the pressure sensor 3. When the pressure sensor 3 detects that the pressure in the stabilizer storage tank 4 is lower than the set value, the regulating valve 2 is opened. Through the above-mentioned technical solution of automatically replenishing nitrogen, the pressure in the stabilizer storage tank 4 is in a certain high pressure state, so that the pressure between the stabilizer storage tank 4 and the methane chloride storage tank 7 is maintained at 0.1 to 0.2 MPa, thereby ensuring the output efficiency of the stabilizer.

[0026] The above embodiments and drawings are only used to illustrate the technical solution of the utility model, and are not intended to limit the utility model. The utility model is described in detail with reference to the preferred embodiments. It should be understood by ordinary technicians in this field that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the scope of protection of the claims of the utility model. Other related technical structures not fully disclosed in the utility model are prior art in the field.

Claims

1. A stabilizer automatic adding system for methane chloride, comprising a stabilizer storage tank (4) and a methane chloride storage tank (7), wherein the stabilizer storage tank (4) is provided with a stabilizer adding pipeline connected to the methane chloride storage tank (7); Features: The stabilizer addition pipeline is provided with a shut-off valve (5) and a flow meter (6); the methane chloride storage tank (7) is provided with a liquid level sensor electrically connected to the shut-off valve (5) to control the shut-off valve (5) to open; and the shut-off valve (5) is opened after the liquid level in the methane chloride storage tank (7) increases to a set height; The flow meter (6) controls the flow rate of the single addition of the stabilizer and is electrically connected to the shut-off valve (5). When the set single addition amount is reached, the shut-off valve (5) is closed.

2. The automatic stabilizer adding system for methane chloride according to claim 1, characterized in that: The stabilizer storage tank (4) is a pressure vessel that can withstand the pressure of nitrogen and the saturated vapor pressure of the stabilizer.

3. The automatic stabilizer adding system for methane chloride according to claim 2, characterized in that: The stabilizer storage tank (4) is provided with a nitrogen supplement pipeline (1) so that the pressure in the stabilizer storage tank (4) is always greater than the pressure in the methane chloride storage tank (7).

4. The automatic stabilizer adding system for methane chloride according to claim 3, characterized in that: The stabilizer storage tank (4) is provided with a pressure sensor (3) for monitoring the pressure in the stabilizer storage tank (4).

5. The automatic stabilizer adding system for methane chloride according to claim 4, characterized in that: The nitrogen replenishment pipeline (1) is provided with a regulating valve (2) to control the nitrogen replenishment amount.

6. The automatic stabilizer adding system for methane chloride according to claim 5, characterized in that: The regulating valve (2) is electrically connected to a pressure sensor (3), and the regulating valve (2) is opened when the pressure sensor (3) detects that the pressure in the stabilizer storage tank (4) is lower than a set value.

7. The automatic stabilizer adding system for methane chloride according to claim 3, characterized in that: The pressure between the stabilizer storage tank (4) and the methane chloride storage tank (7) is maintained at 0.1 to 0.2 MPa.

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