defoamer-antifoam

As we all know, compared with the developed paper-making countries in Europe and America, due to the shortage of land resources in China, especially the shortage of forest resources, we must protect limited forest resources. Therefore, the urgent issue that chinese paper industry must be face is : how to use artificial fast-growing forests to produce short fibers and recycled fiber/waste paper, by the way, using fine chemicals can help paper workers effectively alleviate and solve this problem. So here let us learn what exactly is fine chemicals? Fine chemicals mainly refer to chemicals used in the wet-end flow system of paper machines. Everyone knows that the wet end of the paper machine is a study of the various materials in the paper stock (slurry circuit and slurry circuit) in the process of water filtration, retention, forming and white water circulation, water, fiber and other additives. The science of interaction and action law; it is also a science to study the interaction...

Foam control in paper machine sizing system (paper defoamer) Combined with the production practice of Nan Paper #5 paper machine, conclude the formation, type, hazard and control measures of foam in the slurry. Edited by Mr Hu. Foam is generated when air is mixed into the slurry. The presence of foam can have a number of adverse effects on the papermaking process, especially on high speed paper machines where foam control is more important. 1.The cause and harm of foam formation Studies have confirmed that foam is a colloidal system formed by the dispersion of gases in a liquid. In papermaking systems, the gas is typically air or CO2, and the liquid medium is typically water. In the papermaking process, many operations cause the process water and white water to mix into the air to form a foam. For example, the slurry falls down in a waterfall, the air of the slurry pump leaks, the agitator of the slurry pool agitates too strongly or the agitator exposes the liquid surface, the pre...

Nanjing Invelychem has developed a defoamer (anti-foaming agent); Invely-0030, which exhibits a superior defoaming property in the sugarcane ethanol production process. 【 Background of the development 】 Amid the taking measures against global warming, bioethanol is considered a green alternative to gasoline that does not affect the total amount of CO 2 in the atmosphere. It is expected to be carbon-neutral biofuel and its use has been steadily increasing mainly in U.S. and Brazil. Bioethanol is produced from feedstock crops such as sugarcanes and corns via alcoholic fermentation. Especially sugarcanes give very high bioethanol yield per unit of land; thus bioethanol has been already widely used in Brazil where the largest amount of sugarcane is produced worldwide. Bioethanol is produced by a decomposition of sugar to ethanol and carbon dioxide through alcoholic fermentation using yeast. Carbon dioxide generated during the fermentation process creates a lot of foams, and th...

Invely-620D in papermaking pulping black liquor trial application: Costomer introduction: A paper mill in Shandong Province has an annual output of 600,000 tons. The raw material is hardwood. The foaming in the black liquor of papermaking is serious. Lead into efficiency of vacuum washing is greatly reduced, which seriously affects the stability of production and the quality of paper products, and even causes the machine to stop. . After Learned our defoamer, sent 20 kg of black liquor to our company for testing and selection, recommended the Invely-620D, the foam was effectively controlled. Date sheet Product Name: Defoamer Invely-620D Key property: ·    Good compatibility, silicone grease does not precipitate and float after moderate dispersion in the system; ·    Easy to disperse in water, good compatibility within the addition; ·    Acid and alkali resistant Appeara...

Industrial circulating water defoamer is a defoamer developed according to the characteristics of industrial circulating water foaming in the cooling water system. Industrial circulating water is also called cooling circulating water, and is mainly composed of a circulating pump, a control system, a check valve, and the like. However, when water treatment is carried out using industrial cycle machine technology, foam is easily generated due to agitation, entry of soluble gas, equipment, water quality, additives, and the like. If these foams are discharged without treatment, the impact on the ecological environment will be very large. Therefore, it is necessary to use industrial circulating water defoamer at this time.  Industrial circulating water process        The industrial circulating water defoaming agent is a defoaming agent which is prepared by compounding a modified silicon polyether with a modified siloxane and using a special process. It can so...