Hubei Sanli Fengxiang Technology Blog

    As a  Formaldehyde Production Plant , there is some information to share with you. In the process of formaldehyde production, it sometimes causes over-temperature phenomenon. Based on the actual experience in the production process, I made the following analysis: 　　01 　　The steam drum pressure suddenly drops, the batch steam is reduced, sometimes the water is added too fast, the steam drum is full of water, and some instruments fail. Slowly add water, increase the steam pressure, properly increase the batch steam, check whether the meter is normal; 　　02 　　The evaporator liquid level is too low, the evaporation amount is too small, and it is easy to cause over-temperature. The methanol feed amount should be appropriately increased to make up the normal liquid level; 　　03 　　If the meter fails, the air flow suddenly increases, and it is also very easy to overheat. The air volume should be reduced immediately, the instrument should be repaired, and normal production should

Hydrogen Peroxide Plant Supplier  analyzes the environmental pollution of formaldehyde production from industrial formaldehyde production. At present, the main sources of pollution in China's formaldehyde industry are waste gas, wastewater and noise. For the treatment of exhaust gas: Most of the formaldehyde produced in China uses the silver process. In the production process, methanol and air, water vapor enter the reactor, and oxidize and dehydrogenate under the catalysis of the silver catalyst to form formaldehyde. The oxidation reaction of methanol starts at about 200 ° C. The heating process is heated by an electric heater, and no boiler heating is required, thereby reducing the pollution of the coal-fired boiler to the atmosphere. On the other hand,  Formaldehyde Production Plant  produces exhaust gas during the process of formaldehyde production. The process uses a tail gas processor to burn off the polluted gas in the exhaust gas, and converts the heat into steam throu

As a  Hydrogen Peroxide Plant Supplier , let us explain the working process and principle of the first absorption tower and the second absorption tower in the production of formaldehyde. Their working process is: gas enters the tower from the bottom of the tower, enters the packing layer through the packing support frame, and the absorption liquid enters the liquid distributor from the upper part of the tower to spray the absorption liquid evenly on the packing, and the surface of the packing is wetted by the absorption liquid. When the gas passes through the gap of the packing layer, it exchanges mass with the absorbing liquid on the surface of the packing. As the spraying liquid continuously flows downward, the absorbing liquid film on the surface of the packing changes continuously, so that the mass transfer resistance is greatly reduced, so as to prevent the spray liquid from being prevented. The phenomenon of bias flow and no generation of channel flow and wall flow, the filler

Although the domestic hydrogen peroxide industry has developed rapidly in recent years and the production technology level has also improved, it is optimized and improved on the basis of the fixed bed hydrogenation process. Compared to the domestic production of hydrogen peroxide, the  Fluidized Bed Hydrogen Peroxide Processes  technology has obvious features and advantages: 1. The scale of production is greater. Several companies with the largest production of hydrogen peroxide in foreign countries have formed their own unique production technology and supporting production equipment, basically adopting fluidized bed hydrogenation process, and the scale of single set of equipment is large, and the production scale of hydrogen peroxide can reach 330,000 tons. 100% concentration meter, hydrogenation efficiency 18g / L). 2. More efficient production. For example, Hubei Sanli Fengxiang Technology Co., Ltd. uses high-capacity working fluid, fluidized bed hydrogenation and other advanc

As a  UF Technology Supplier , let's talk about the issues that need to be addressed in design and operation. The phenolic resin industry wastewater must reach the third-level discharge or the first-level discharge, and must pass the biochemical system to meet the requirements. In order to ensure the stable operation of the biochemical system, the wastewater before entering the biochemical system needs to be pretreated by physicochemical treatment. The delayed condensation method for wastewater with small water volume (20 tons of wastewater/day or less) is an effective pretreatment method. Delayed condensation mainly refers to adjusting the proportion of phenolic according to the proportion of phenolic in the wastewater and the type of phenol. Under the condition of sulfuric acid or oxalic acid catalysis, the phenolic is condensed in two steps at a certain temperature, and the wastewater is condensed. The phenol content is controlled below 1000 mg/L, and the COD is not higher th

Hydrogen Peroxide Plant Supplier  believes that the main reasons for the decrease in formaldehyde concentration are: 1. Add too much water to the top of the absorption tower; 2. The amount of steam in the ingredients is too much; 3. Excessive amount of diphenyl formaldehyde produced by the two towers; 4. The reaction temperature is too low; 5. The catalyst conversion rate is reduced; 6. Oxidizer waste heat boiler tube leakage; 7. The circulating fluid cooler leaks. Silver Catalyzed Formaldehyde Plant The formaldehyde concentration was found to decrease in the  Formaldehyde Production Process , first reducing the amount of water added to the top of the tower. Immediately afterwards, the reason was found, and the process parameters such as the amount of water added to the top of the tower, the amount of steam of the ingredients, the reaction temperature, and the like were adjusted in time, and some oxygen temperatures were raised to observe the conversion rate. If yo

In the process of formaldehyde production, in order to be safer, more efficient, less expensive, and extend the driving cycle.  Hydrogen Peroxide Manufacturing Plant  summed up a few cautions. 1. Do all the preparatory work before driving, and check the maintenance of water, electricity, steam and equipment; 2. It is necessary to turn off the good raw materials, unqualified methanol does not unload the goods, and avoid direct poisoning of the catalyst; 3. Air filtration should be thorough, change the air filter bag frequently, and regularly check and replace the ternary high-efficiency filter; 4. Circulating water and steam drum water should be treated with reverse osmosis to prevent impurities from entering the catalyst chamber, resulting in increased system resistance; Formaldehyde Equipment 5. Strictly control the process parameters, adjust the aerobic ratio and the concentration of the ingredients. When the alcohol content is 0.5% and the acid content is 0.006% or le