How to use the explosion-proof temperature controller for the reaction kettle
The usage of the explosion-proof temperature controller for the reactor is as follows: 1. ** Check before use ** - After opening the box, the appearance of the control instrument was checked to see if it was damaged or rusted due to transportation and storage problems. He opened the legs to check if the control instrument was level and if the movable parts were flexible. - According to the name of the connection on the back panel of the control instrument, connect the power supply, heater, motor power supply, temperature sensor, speed sensor and ground wire of the control instrument according to the terminal identification. After checking that there is no error, connect the power supply. 2. ** Temperature-adjustment ** - Follow the instructions of the thermometer. For the first use, it is recommended to set the program and directly use the self-tuning method to determine the P, I, and D parameters through the instrument self-tuning. However, the constant temperature time for the first use is relatively long, and the more accurate P, I, and D parameters can only be determined after three settings are completed. After that, if the same parameters were used, there was no need to start the self-tuning function again, and the temperature could be controlled more accurately. 3. ** Speed adjustment (if any)** - The stirring speed of the motor can be adjusted by the up and down keys of the speed governor. The required stirring speed can be achieved by referring to the speed displayed on the stirring speed display. 4. ** Running Operation ** - Carefully check if there are any abnormalities before normal operation. Do not open the back door during operation to prevent electric shock. - The measuring instruments should be regularly aligned to ensure accurate and reliable operation. The working environment of the equipment must meet the safety technical requirements. - For instruments that have been left unused for a long time and instruments that have been working in a humid environment for a long time, the overall insulation resistance should be measured irregularly. The overall resistance should not be less than 10 Mum. 5. ** Equipment stop operation (no mention of special stop operation for explosion-proof temperature controller of reaction kettle, refer to the general requirements for relevant equipment stop)** - First, turn off the heating or cooling system, then turn off the equipment's power supply, and finally deal with the equipment's water source and air source (if any). Read more exciting novels for free
How to use the explosion-proof temperature controller of the reactor?
First of all, before turning on the equipment, check whether the power supply, water source, and air source of the equipment are normal. If there is any abnormality, deal with it immediately. After turning on the power supply of the equipment, adjust the explosion-proof temperature control device of the reactor to the required temperature, and then start the heating or cooling system. When the equipment reached the set temperature, turn off the heating or cooling system, and then adjust the temperature control instrument to room temperature to prevent the equipment from overheating or overcooling. During the operation of the equipment, it is necessary to check the operation status of the equipment regularly. Once an abnormality is found, it should be immediately shut down for treatment. When the equipment was shut down, the heating or cooling system should be turned off first, then the equipment power supply should be turned off, and finally the equipment water source and air source should be dealt with. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction kettle reconstruction construction plan
The following are some common construction plans for the reactor: ** I. Electromagnetic heating modification plan for the reactor ** 1. ** Power calculation and selection ** - First of all, the known conditions must be clear, such as the material, size (diameter, height, thickness, etc.), weight, effective volume, material weight, material mixing heat, heating temperature requirements, time requirements, etc. - According to the heat calculation formula,[Q = cm/Delta t+km](where [c] is the specific heat capacity,[m] is the mass, and [Delta t] is the temperature difference), the specific heat capacity [J/(KG* ° C)], the temperature difference [° C], and the mass [KG] are substituted into the formula and divided by the time [S] to obtain the power [W]. - For example, the known atmospheric pressure reactor, material 304, the external dimensions of the kettle body are 2 meters in diameter * 3 meters in height (8mm in thickness), the weight is about 1000kg, the effective volume is 7 m3, the material weight is 7 tons, the reaction material is a certain liquid material mixed specific heat according to the requirements of 4200J/kg* ° C, and it is required to be heated from 20 ° C to 280 ° C within 3 hours. After calculating the theoretical power, it is necessary to consider the loss (generally increase the loss by 20%) to determine the actual matching power. For example, the theoretical power of the above example is 708KW, and the actual matching is 708KW *1.2 = 850KW. Seven sets of 120KW electromagnetic heater can be used for parallel heating. 2. ** Steps to design the plan ** - Understand the original structure and working principle of the reactor, including the size, shape, material, working temperature and other parameters of the reactor. Then, according to the actual situation and needs of the reactor, the electromagnetic heating scheme was designed. ** II. Upgrade plan for the support and foam plug at the bottom of the reactor ** 1. ** Selection of Upgrade Materials ** - High-quality steel was used to ensure the bearing capacity and corrosion resistance of the lower support and foam plug. 2. ** Pre-construction preparation ** - The original lower support and foam plug were first cleaned, and then disassembled to facilitate the installation of new materials. 3. ** installation process ** - After determining the size of the new material, he drilled a hole and installed it gently. Then, he adjusted the reaction kettle to ensure that the new support and foam plug were stable. ** 3. Cleaning and replacement of paint containers ** 1. ** Clean paint container ** - Clean up the old paint container, use professional equipment to heat and spray it with high pressure to ensure that it is thoroughly cleaned. 2. ** Change paint container ** - A new paint container was installed, and the corresponding clamp was used to fix the container to ensure safety and reliability. ** IV. Replacing the valve and sensor ** 1. ** Replacing the valve ** - First of all, determine which valve needs to be replaced, then use professional equipment to disassemble it, and choose a suitable position for the new valve to install. 2. ** Replacing the sensor ** - Clean the original sensor, then remove it and mark it according to the location where the new sensor is to be installed. For the modification of the reactor involving the key supervision of dangerous chemical processes (such as the modification of the internal heat-conducting oil-injected electric heating reactor without cooling measures): 1. ** For the atmospheric pressure reaction process using heat medium heating ** - The reaction kettle should be equipped with automatic control valve for feed and heat medium, and the reaction temperature can be adjusted by changing the feed flow or heat medium flow. - The reaction kettle shall be equipped with a high reaction temperature alarm and interlocked to cut off the feed or the heat medium. The parallel lock shall be used to open the emergency cooling system (including the cooling medium) and emergency discharge facilities. 2. ** For the pressure reaction process using heat medium heating ** - The reaction kettle should be equipped with an automatic feed or heat medium flow control valve, which can adjust the reaction temperature and pressure by changing the feed flow or heat medium flow. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Zhoushan reaction kettle electric heating
Zhoushan electric heating heat-conducting oil furnace has been applied in the production of oil resin. In industrial production, the reaction kettle electric heating heat-conducting oil furnace had many advantages. For example, its heating system was a closed circulation system, which could quickly heat up and cool down the reaction kettle. It could be customized to a very small volume and was easy to install. It was suitable for medical research occasions. It could realize special control methods such as cascaded control to stabilize the temperature. It could also realize automatic control through remote communication or programming with a PC to provide safety for production. It also played a positive role in reducing the probability of defective products and providing complex temperature control process design solutions. Its power consumption mainly depends on the heating part and the circulating pump, and the power consumption can be reduced through measures such as pipe insulation. In the relevant application scenarios of Zhoushan, the electric heating oil furnace of the reactor could also play a similar role. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Skyworth refrigerator temperature controller adjustment method
There were many ways to adjust the temperature control of Skyworth's refrigerator. The temperature of the refrigerator could be adjusted through the temperature control knob. The temperature control knob usually had 0, 1, 2, 3, 4, 5, 6, and 7. The higher the number, the lower the temperature in the freezer. In summer and winter, in order to save electricity and ensure the quality of frozen food, the temperature control knob of the refrigerator needed to be adjusted. In winter, the temperature of the Skyworth refrigerator should be adjusted to 4-5. In addition, according to the temperature requirements of the refrigerator and freezer, the temperature regulator can be used to reduce or increase the temperature. Under normal circumstances, a temperature of-18 ° C was suitable for most frozen foods. If a stronger freezing ability was needed, the temperature could be adjusted to around-25 ° C. When adjusting the temperature, one needed to pay attention to avoid opening and closing the refrigerator door frequently to prevent hot air from entering the refrigerator and causing the temperature to go out of control. In short, the temperature control of the Skyworth refrigerator could be adjusted through the temperature control knob and the temperature regulator.
Explosion-proof wall practice drawings
The common methods of explosion-proof walls were reinforced concrete walls, brick walls with reinforcements, and sand-filled steel planks. For reference, the standard of Atlas 14J938 shows that the pressure value of the anti-explosion wall is greater than or equal to 400KPa. The design of the anti-explosion wall requires the use of fire-resistant materials that are not easy to burn. It should not be selected as the bearing wall of the house. It can be used as a reinforced brick wall. If there are special circumstances in the room next door (such as the presence of certain items, etc., which are not specified in detail), they need to be considered on a case-by-case basis. In terms of wall construction, materials with high strength, corrosion resistance, and explosion-proof properties should be used, such as reinforced concrete, fire-resistant bricks, and impact-resistant plates. The thickness of the reinforced brick wall shall be determined by the structural calculation, but it shall not be less than 240mm. The brick strength shall not be lower than MU75, and the mortar strength shall not be lower than M5. Along the height of the wall body, a horizontal steel bar of 3 × 6 - 10 length shall be arranged every 500mm. Both ends of the steel bar shall be bound or welding with the embedded steel bar of the reinforced concrete frame or bent column. There was also an explosion-proof wall structure consisting of steel keels, fiber cement composite steel plates, and rock wool. The fiber cement composite steel plates were made of two 0.5mm thick plated steel plates that were punched and squeezed onto 85mm thick fiber cement. There was also a 20-centimeter finished anti-explosion wall, which was made of double-sided single-layer fire-resistant board and reinforced with rock wool. During the construction process, the distance between the keels shall be 1200mm, and the installation method shall be bolted connection or welding (intermittent welding, the length of the welding spot shall be 50mm, and the distance shall be 100 - 110mm from the edge of the keels, and it shall be evenly distributed along the length of the steel plate). After the welding is completed, the welding slag shall be removed, and the steel surface shall be derusted. The base layer shall be painted without impurities, and it is strictly prohibited to miss coating, peel off and rust back. The explosion-proof wall can use a file or a grinder to remove the sharp edge produced by cutting the steel plate. The cut generally does not need to be anti-corrosive, but when removing the cut, avoid damaging the plated layer of the steel plate to prevent reducing the anti-corrosion property. The drill can be used for drilling, and the drill bit is made of high-strength stainless steel. The novel "Glittering Four Seasons" is equally exciting. Everyone is welcome to click and read it!
The most suitable reaction temperature for a reverse-heat reaction
In the case of a revertible thermal reaction, the chemical reaction constant was a positive function of temperature. The higher the temperature, the faster the reaction speed. However, increasing the temperature in a revertible thermal reaction had a contradictory effect. On the one hand, as the positive reaction proceeded, the system would release heat and the temperature would increase, and the reaction would speed up. On the other hand, the reverse reaction would also speed up as the temperature increased, which would weaken the positive reaction. Therefore, there was an optimal temperature at which the reaction rate was the greatest. This temperature was called the optimal temperature. In the case of the industrial synthesis of hydrogen, which was an example of a reversibility, from the perspective of increasing the reaction rate and increasing the content of hydrogen, the actual industrial production used a temperature of 400 - 500 ° C, and the iron catalyst was the most active at around 500 ° C. In addition, in order to make the overall reaction speed and conversion rate of the irreversible exothermic chemical reaction process fast, a temperature segment control scheme can be used to make it change according to the optimal conversion rate temperature curve trajectory. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Mini High Pressure Reaction Kettle Operation Rules
Tianshui reaction kettle chemical equipment retail price
According to the reference materials, the retail price of chemical reaction equipment in Tianshui, Gansu Province was as follows: the price of 2000L porcelain reaction pressure tank was 10,000 yuan; the price of stainless steel stirring tank and stainless steel reaction kettle was 6657.00 yuan; the price of high-speed washing liquid vertical stirring machine and high-speed foaming dispersing machine was 4800.0 yuan. The price of a small stainless steel reactor in Guangzhou, Guangdong, was 5,600.00, and the price of a small stainless steel reactor in Wuxi, Jiangsu, was 1,300.00. However, this could be used as a reference to compare the situation in Tianshui. It should be noted that second-hand chemical equipment is generally quoted at 100 - 200 yuan/ton, but this is very different from the retail price of new equipment and is affected by many factors. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Hohhot.com, the heating method of the thermal reaction kettle
The heating forms of the thermal reaction kettle were jacket type and inner coil type. In addition, the common heating method of the reaction kettle was electric heating.(For example, by installing electric heating elements such as resistance wires, silicon carbon rods, and PAC ceramic inside or outside the reactor, the current can be used to generate heat through the resistance to heat the reactor body or heat transfer medium), thermal oil circulation heating, hot water heating, steam heating, etc. However, the document did not indicate whether these heating methods were specifically applicable to the thermal reactor in Hohhot. Generally speaking, the thermal reactor in Hohhot. may also adopt the above heating methods. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Price List of Guangzhou Explosion-proof HD Cameras
According to the information given, there was a POE explosion-proof and dust-proof surveillance camera in Guangzhou. The price was 245.00 - 330.00 yuan, and the minimum price was 2 units. It was produced in Guangzhou, and the brand was OSCARVision. The horizontal resolution was 4MP/2.5K, the minimum illumination was 0.001, the lens was 2.7 - 13.5mm, and the working temperature was-20 - 65 ° C. No more information about the price of Guangzhou explosion-proof HD cameras was found. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>