Details needing attention in improving reaction rate of industrial high and low temperature circulating device

The use of refrigeration and heating temperature control system is indispensable for the industrial high and low temperature cycle device to meet the various temperature sections required by production with high precision. In the common reactions in chemical and pharmaceutical industries, there are some complex problems regardless of the reaction conditions or reaction process, and the heat released by the reaction is different in different reaction stages. The high and low temperature circulating device is suitable for controlling heat dissipation and heat dissipation in the reaction process. The temperature of materials in the reactor is linearly controlled. What details should be paid attention to if the industrial high and low temperature circulating device tends to be stable in the actual operation process?

▼ suitable working environment:

During the actual operation of the industrial high and low temperature circulating device, it is necessary to ensure that the surrounding is a suitable operating environment, ensure that the environment is clean and tidy, effectively reduce dust, and improve the stability of the whole equipment in a short time. Only by ensuring the heat dissipation effect of industrial high and low temperature circulating device can the cooling performance of industrial high and low temperature circulating device be effectively improved, the ambient temperature can be reduced in a short time and the energy loss of equipment can be continuously reduced;

▼ safety guarantee & operation of industrial high and low temperature circulating device

The industrial high and low temperature circulating device has a variety of safety protection functions such as self diagnosis function, overload protection, intelligent safety alarm, high-voltage pressure switch, overload relay and thermal protection device, and multiple protection functions such as high-temperature cut-off, emergency stop, delay, leakage, overcurrent and overheating, so as to fully ensure the safety of use and ensure the safety of your experiment and production. The unique double PID fuzzy control is adopted to control the accuracy of temperature and greatly improve the heat exchange efficiency. Attention shall be paid to its safety during operation. The use method and installation precautions of industrial high and low temperature circulating device:

1. Before using the industrial high and low temperature circulating device, check whether the main power supply is connected properly? Is there any phenomenon of reverse phase or phase loss of power supply? All industrial high and low temperature circulating devices are equipped with power reverse phase or phase loss protection devices. If this phenomenon occurs, the industrial high and low temperature circulating device will automatically send an alarm to remind the operator to check the power supply;

2. Before installation, it is also necessary to check whether the oil pump of industrial high and low temperature circulating device is reversed to prevent motor damage;

Industrial high and low temperature circulation device to improve the reaction rate, need to pay attention to the details!

3. The industrial high and low temperature circulating device circulates the high-temperature oil pump for a period of time after injecting heat transfer oil. When the system pressure of the industrial high and low temperature circulating device is normal and the pointer of the system pressure gauge does not shake left and right, it works at temperature rise;

4. Check the liquid level of the industrial high and low temperature circulating device and start heating up when the heat transfer oil is sufficient. When the loss of heat transfer oil is insufficient, it shall be supplemented in time to avoid mechanical dry burning damage;

5. The industrial high and low temperature circulating device uses the conversion of heat transfer oil heating to heat the materials to be heated. The poor heat transfer oil has short service life and is easy to scale. In the high temperature state, impurities will decompose, the temperature cannot rise, water vapor will produce fuel injection, and there will be danger;

6. The operator only needs to correctly operate the industrial high and low temperature circulating device according to the operating instructions;

7. Reduce failure rate:

In the process of using and maintaining the industrial high and low temperature circulating device, the probability of failure of the industrial high and low temperature circulating device is still relatively low, and the service life of the whole industrial high and low temperature circulating device is affected by some wrong operations;

8. Minor faults shall be repaired in time:

Once there are some small faults in the industrial high and low temperature circulating device, it should be repaired in time;

▼ factors affecting refrigeration of industrial high and low temperature circulating device (air cooling)

(1) self failure and model mismatch

Check whether it is the fault cause of the industrial high and low temperature circulating device (air cooling). In addition, the type selection of the industrial high and low temperature circulating device (air cooling) must be accurate. If the model is not matched in place, it will also fail to achieve the required refrigeration effect;

(2) the environment is not ventilated

The industrial high and low temperature circulating device (air cooling) has high requirements for the working environment. The refrigeration principle adopts hot air circulation for refrigeration. If the ventilation effect of the installation workshop is not good, it will directly affect the refrigeration effect;

Industrial high and low temperature circulation device to improve the reaction rate, need to pay attention to the details!

(3) there is dust on the surface of accessories

There is much dust on the surface of the compressor, resulting in slow heat dissipation of the compressor, which indirectly affects the refrigeration effect. The dust in the condenser of industrial high and low temperature circulating device (air cooling) affects the heat dissipation effect. The equipped unit operates at full load and the ambient temperature rises, resulting in insufficient refrigeration power, which affects the refrigeration effect;

(4) refrigerant

The refrigerant of industrial high and low temperature circulating device (air cooling) leaks or is insufficient, which leads to the decline of the refrigeration effect of the chiller. There are sundries or sludge in the evaporator, resulting in slow flow rate, which affects the evaporation and condensation capacity and reduces the refrigeration effect;

(5) insufficient refrigerant

Insufficient refrigerant (Freon) will lead to poor refrigeration effect of industrial high and low temperature circulating device (air cooling). During the operation of the chiller, the liquid refrigerant in the evaporator constantly absorbs the heat in the water and begins to evaporate. After the compression of the compressor and the throttling of the expansion valve, it becomes a low-temperature and low-pressure refrigerant and enters the evaporator for continuous circulation. If it is used for too long, the refrigerant will volatilize, which will affect the refrigeration effect;

(6) the filter is blocked

When the filter of industrial high and low temperature circulating device (air cooling) is blocked, it will affect the heat exchange effect of the condenser, and then the refrigeration effect of the whole machine is poor. It is necessary to check and clean the filter regularly. If the filter is blocked seriously, it is recommended to replace a new dry filter;

▼ how to shut down the industrial high and low temperature circulating device?

The use of refrigeration and heating temperature control system is indispensable for the industrial high and low temperature cycle device to meet the various temperature sections required by production with high precision. In the common reactions in chemical and pharmaceutical industries, there are some complex problems regardless of reaction conditions or reaction process, and the thermal effects are different in different reaction stages. The high and low temperature circulating device is suitable for controlling heat dissipation and heat dissipation in the reaction process. The temperature of materials in the reactor is linearly controlled. In actual use, in order to maintain the stable performance of the industrial high and low temperature circulating device during long-term operation, users need to reduce the excessive wear and tear of the equipment in combination with the actual use needs.

01. Shutdown steps of industrial high and low temperature circulating device:

(1) confirm that the industrial high and low temperature circulating device is within the shutdown range, then all shutdown operations can be carried out to avoid large pressure. The compressor can be stopped only after the suction stop valve is closed.

(2) after the shutdown of the chiller compressor, it is necessary to operate the oil pump to return the slide valve of the industrial high and low temperature circulating device to the 0 scale position to make the load reduction reach zero. At this time, the oil pump will immediately stop all operation.

(3) stop the operation of water pump and cooling water tower. After stopping the operation of such equipment, turn off the whole power supply of the industrial high and low temperature circulating device to complete the whole shutdown process of the industrial ice water machine.

02. Precautions for shutdown of industrial high and low temperature circulating device:

(1) if the machine is shut down for a long time, it is necessary to completely pump the refrigerant to the condenser and discharge all water sources at the same time to avoid corrosion and other problems.

(2) after the shutdown, it is necessary to carry out detailed inspection for various accessories. The shutdown process of industrial high and low temperature circulating device is more exquisite. With the help of the shutdown steps, the service life of the equipment can be prolonged.

(3) for industrial high and low temperature circulating devices that have been shut down for a long time, ensure that the equipment is away from all kinds of corrosive substances and improve the service life of industrial high and low temperature circulating devices.

03. Maintenance instructions for industrial high and low temperature circulating device:

(1) repair welding to prevent tube sheet leakage

The materials of industrial high and low temperature circulating devices are generally carbon steel and stainless steel. Generally speaking, welding repair is the main method for the anti-corrosion of industrial high and low temperature circulating devices, but the internal stress of tubesheet will occur in the process of welding repair, which will cause the re leakage of tubesheet of industrial high and low temperature circulating devices;

(2) welding

❶ when manual arc welding is generally adopted for the welding of tubesheet and row pipe, there are different degrees of defects in its form, which will be often encountered in the welding process;

❷ in the process of welding, subsidence, air holes, slag inclusion, etc. will be caused, and the three steps of welding ability will also become quite uneven. When the tubesheet is in contact with industrial cold water, the impurities in industrial water, salts, gas microorganisms, etc. will have varying degrees of impact on the welding of tubesheet;

(3) damage of industrial water to equipment

It is often said that industrial water, whether seawater or fresh water, has a certain chemical reaction to metals in the maintenance of industrial high and low temperature circulating devices. Therefore, we should pay special attention to the maintenance of industrial high and low temperature circulating devices;