What is the anti-static grounding standard for acetic acid storage tanks?

Acetic acid tank anti-static grounding standard is what?

In the chemical industry, as an important industrial raw material, acetic acid is widely used in the production of vinyl acetate, polyester resin and other products. Acetic acid is flammable, and its vapor may form an explosive mixture when mixed with air. Therefore, during storage and transportation, the accumulation of static electricity may cause serious safety hazards. In order to prevent accidents caused by static electricity, the anti-static grounding design of acetic acid storage tanks becomes particularly important. This article will analyze the standard and requirement of anti-static grounding of acetic acid tank in detail.

1. Anti-static grounding the basic principle

The generation of static electricity is usually related to the friction during the flow, stirring or pipeline transportation of materials. In the acetic acid storage tank, the flow or stirring of the liquid may generate static electricity. If not controlled, the accumulation of static electricity to a certain extent may cause sparks or discharge phenomena, thereby causing fire or explosion accidents.

The main purpose of anti-static grounding is to export static electricity to the ground through the grounding device, thereby avoiding the accumulation of static electricity. The grounding device includes grounding resistance, wire and grounding electrode to ensure a stable conductive path between the tank and the ground.

2. Acetic acid tank anti-static grounding material selection

When choosing anti-static grounding materials, you need to pay attention to the following points:

• Conductive material: The storage tank itself is usually made of stainless steel or carbon steel. These two materials have good electrical conductivity and can effectively reduce static electricity accumulation.
• Electrostatic export material: in the tank top or bottom installation of electrostatic export device, such as conductive paint or conductive flange, to ensure that static electricity can be quickly released.
• Grounding conductor: select the cross-sectional area of the larger wire, such as copper core cable, in order to reduce the grounding resistance, to ensure that static electricity can be quickly derived.

Reasonable selection of materials can effectively reduce the risk of electrostatic accumulation and ensure the safe operation of the storage tank.

3. Grounding point setting standard

In the design of acetic acid storage tank, the setting of grounding point is the key link of anti-static grounding. The following are the basic requirements for setting the grounding point:

• Tank top: in the tank top set a grounding point, to ensure that the tank and the ground between the conductive path stability.
• Storage tank base: The base of the storage tank should be closely connected with the tank body, and through the wire and ground electrode connection, to ensure that static electricity can be quickly released through the base.
• Pipe connection: for the connection tank of the pipeline, should be in the inlet and outlet set grounding point, to avoid the pipeline in the static electricity transfer to the tank.
• Breathing valve and safety valve: tank breathing valve and safety valve is static accumulation of high risk areas, need to be installed in these parts of the static discharge device.

By setting the grounding point reasonably, the static electricity of the storage tank and its accessories can be effectively exported to avoid potential safety hazards.

4. Electrostatic grounding design parameters

In the anti-static grounding design of acetic acid storage tanks, grounding resistance and wire cross-sectional area are two key parameters:

• Grounding resistance: Grounding resistance should be controlled at 100 ohms to ensure that static electricity can be quickly derived.
• Conductor cross -sectional area: Conductor cross-sectional area should be based on tank capacity and electrostatic export demand selection, the general selection of 16 mm² or more copper core cable, to meet the high current export demand.

The installation position of the grounding system should be far away from the lightning protection grounding system to avoid the interference of lightning induction to the electrostatic grounding system.

5. Electrostatic grounding installation and maintenance

The installation and maintenance of electrostatic grounding system is an important link to ensure the safe operation of storage tanks:

• Installation specification: in the installation of electrostatic grounding device, should be strictly in accordance with the relevant standards for operation, to ensure that the wire and grounding point between the connection is stable and reliable.
• Regular inspection: regularly check the grounding system integrity, including the wire is loose, grounding point is corrosion, etc., to ensure that the grounding effect to meet the design requirements.
• Thunderstorm season special requirements: In the thunderstorm season, should strengthen the grounding system inspection, if necessary, add temporary grounding device, to ensure the safe operation of the storage tank.

Through the scientific design and strict management of the electrostatic grounding system, the hidden danger of acetic acid storage tank can be effectively reduced and the smooth progress of chemical production can be guaranteed.

Summary

The anti-static grounding standard of acetic acid storage tank is an important guarantee for safe production in chemical industry. Through reasonable selection of materials, scientific setting of grounding points, optimization of grounding design parameters, and strict implementation of installation and maintenance specifications, safety accidents caused by static electricity can be effectively prevented. In the future, with the continuous development of the chemical industry, electrostatic protection technology will continue to be optimized to provide a stronger guarantee for the safety of industrial production.