Hubei Sanli Fengxiang Technology Blog

In addition to a large amount of formaldehyde, formaldehyde wastewater also contains alcohol, benzene, phenol, trioxane, methylal and the like. Low concentrations of formaldehyde have an inhibitory effect on microbial growth. High concentrations of formaldehyde can denature proteins and microorganisms are difficult to survive. As a  Hydrogen Peroxide Plant Supplier , we share with you how to treat aldehyde-containing wastewater. Introduction to common process of formaldehyde wastewater treatment: 1. Oxidation method: oxidation method includes reagent oxidation, ozone oxidation, micro-electrolysis oxidation, strong electrolytic oxidation, photocatalytic oxidation, wet oxidation, ultrasonic/H 2 O 2 method, ClO 2 oxidation method, etc.; The situation is fixed. 2. Blow-off method: The use of formaldehyde is easily soluble in water, and the boiling point is low and volatile. The formaldehyde in the production wastewater is stripped and pretreated with steam, which reduces the l...

As a  Hydrogen Peroxide Industrial Plant , let's share with you why the silver formaldehyde raw material air is purified and cleaned. The air used in the raw material gas for formaldehyde production is collected from the atmosphere, and the dust, SO2 and the like contained in the atmosphere can contaminate the catalyst, so that the performance of the catalyst is lowered and the service life is shortened. Therefore, it is necessary to purify the air. There are two basic methods for purifying air and washing. 1. The filtration method is to install a filter to which a filter block is attached, and to remove solid particles such as dust in the air by using a filter medium inside the filter block. 2. The washing method is to set up a washing tower. The washing liquid can be selected according to the degree of air pollution. In the area where the air is acidic, the diluted alkali liquid is used as a detergent to neutralize the acid gas in the air, and at the same time, the dust ...

As a  Hydrogen Peroxide Industrial Plant , let's analyze the reasons for the decline in the concentration of finished formaldehyde in silver. 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. It was found that the concentration of formaldehyde decreased, firstly 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 ob...

As a  Hydrogen Peroxide Production Plant , let's analyze the reasons for the sudden increase in the resistance of the silver formaldehyde production system and how to deal with it. The main reasons for the sudden increase in resistance to formaldehyde production systems are: 1. The catalyst undergoes an over-temperature point to dissolve silver and melt, or the use time is too long, and the catalyst resistance increases; 2. The mixing filter is too dirty; 3. During the production operation, the liquid level of the evaporator and absorption tower is too high; 4. Oxidizer tube carbon deposit, formaldehyde polymer blockage Approach: First, we must measure the resistance of each device piece by piece, find the main part of the resistance increase, and then take measures separately. If the resistance caused by the operation rises, the evaporator and absorption tower liquid level should be strictly controlled, and the outlet temperature of the oxidizer should be contro...

As a  Hydrogen Peroxide Manufacturing Plant , let's talk about the causes of the increase in methanol content in formaldehyde products and how to treat them. Main reason for the increase in methanol content 1. The reaction temperature is low and the catalyst activation temperature is not reached. 2. The ratio of oxygen to alcohol and the concentration of ingredients are low. 3. The raw material methanol is of poor quality and the conversion rate is low. 4. The air is polluted by harmful gases such as sulfur, the steam is rusted, and the catalyst is inactive. Approach 1. Increase the oxygen temperature. 2. Adjust the oxygen to alcohol ratio and the concentration of the match ingredients. 3. Replace high-quality methanol, control methanol potassium permanganate test for more than 50min, and clarify the aqueous solution. 4. Inject the air intake port to the upper air outlet, clean the surrounding harmful substances, and replace the air, steam and mixture filter ...

Hubei Sanli Fengxiang Technology Co., Ltd. has established the Rectification Engineering Technology Research Center in cooperation with Tianjin University. As a  Hydrogen Peroxide Plant Supplier , we are mainly engaged in the research and development of cutting-edge distillation technology, process control and diagnostic technology to provide sustainable customers. The company's advanced rectification technology service, the central technical team has a solid theoretical foundation and rich experience in technology development, engineering construction and on-site operation. The company is dedicated to providing the most advanced and complete separation process technology for domestic and foreign customers. Our company provides  Hydrogen Peroxide Technology . Welcome to contact us.

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The main characteristic of  Formaldehyde Plant  is adopting tail gas circulation method, can maximum limit the use of energy. And the excess steam can use in urea/melamine formaldehyde plant. The  Formaldehyde Production Plant  includes only 3 parts: Evaporator-Reactor-Absorber. Others are either combined into the three or removed. Detailed technology description. 1) Off-Gas Circulation Process by our formaldehyde machine Off-gas is used to take away the reaction heat instead of steam. Therefore, formaldehyde concentration is improved and steam is saved. 2) Flue Gas Circulation Process by our  Formaldehyde Equipment : Flue gas resulted from off-gas incineration is employed to raise the yield as well as the run-up safety. 3) Incomplete Conversion Process An excess of methanol is fed to reduce the reaction temperature and therefore our formaldehyde production line will lower the occurrence of side reactions as well as methanol consu...