What are the operating procedures for the safety of liquid chlorine cylinders?

First, use

1. It is forbidden to place flammable substances such as oils, cotton yarn and organic solvents, and articles liable to react with chlorine on the cylinders.

2. During use, the liquid chlorine in the bottle cannot be used up, and there must be excess pressure left. The cylinder (1000KG) should keep more than 5 kg of residual chlorine.

3, in the use of the process, replace the liquid chlorine cylinder, should be closed before the system into the chlorine valve (buffer tank), then closed?

4. Use of liquid chlorine. The pressure of various types of containers (vaporizers, buffers) should be less than or equal to 0.2 MPa. Use of overpressure is prohibited.

5. When using, ensure that the pressure of the liquid chlorine cylinder is greater than the pressure at the use end.

6. Never use steam or open flame to directly heat the cylinder. Can be heated below 45°C in warm water.

Second, emergency treatment

2. Emergency measures when using system leakage

1) When leaks occur in the system joints of vessels, pipelines, and reaction vessels due to day-to-day long-term corrosion, use ammonia to determine the location of leaks, and then close the total chlorine valve at the chlorine bottle to repair the leak.

2) If there is a large amount of chlorine to be leaked and the chlorine leakage point is not determined at one time, the liquid chlorine cylinder valve shall be closed first, and then the liquid chlorine cylinder valve shall be opened a bit to find the location and cause of the chlorine leakage, and then the liquid chlorine cylinder valve shall be closed. repair.

3. Rescue should use mechanical ventilation facilities to reduce the concentration of chlorine on site to facilitate repairs and rescues.

4. When emergency repairs, rescues or evacuations are carried out, emergency personnel and escape workers should be in an upwind position.

5. When the liquid chlorine cylinder valve cannot be opened, it should be reported to the site management staff and the relevant staff may not handle it without authorization. The company should arrange the relevant technical staff such as the production plant to handle it.

1. Emergency measures for leakage of liquid chlorine cylinders

1) Turn the cylinder so that the leaked part is in the gaseous space of chlorine.

2) When the fusible plug leaks, there should be bamboo sticks and cork stoppers; when the bottle valve leaks, tighten the hex nut; when the bottle weld leaks, use a ferrule tightly lining the rubber gasket. All leaked cylinders should be used as soon as possible and returned to the production plant.

3) Never spray water on leaking cylinders.

4) The general method can not stop the leakage of chlorine. You can push the chlorine bottle into the emergency pool, and at the same time, add alkali to the tank.

Prepare before use

1. When carrying out the operation (use, emergency) of liquid chlorine cylinders, they must wear gas masks, dip gloves and other effective safety protection products.

2, liquid chlorine cylinder transport, placement, connection

1) During the transportation of liquid chlorine cylinders, the protective caps should be tightened and lightly loaded and unloaded.

2) When the liquid chlorine cylinder is placed, the bracket should be fixed. After the liquid chlorine cylinder is placed on the scale, the cylinder should be fixed and the bracket removed.

3) The two valves of the liquid chlorine cylinder shall be placed in a position to maintain both upward and downward states when in use. In use, an upward facing valve shall be connected.

4) The annealed copper tube connection cylinder should be used. The copper pipe should pass the withstand voltage test.

3, open the cylinder valve

1) Connect the cylinder and use a special wrench to slowly open the cylinder valve (off clockwise and counterclockwise).

2) Open the bottle valve to operate slowly, and close it too hard or strong.

3) The outlet end of the cylinder should be equipped with a needle valve to regulate the flow of chlorine, and it is not allowed to use the bottle valve to adjust directly.

4, check the relevant facilities

1) After the valve is opened, the pressure of the vaporizer and the buffer shall be maintained at a condition of ≤ 0.1 MPa, and ammonia shall be used (with a concentration of approximately 10%) to perform a test leak.

2) Check the liquid chlorine gasifier, buffers, pipelines, valves, and instrumentation interfaces for tightness and no leak leakage.