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Special defoamer for WFGD slurry

key word:Heat exchange element

Category:


Product description

1. Composition and application scope

Desulfurization defoamer is a non silicon defoamer, which is polymerized by special organic compounds, related catalysts and glycerol. FB-975 desulfurizing special defoamer is specially developed for slurry foaming of flue gas desulfurizing absorption tower. It is only used for slurry defoaming of desulfurizing absorption tower. It has remarkable effect in inhibiting foaming overflow of absorption tower and preventing slurry backflow at the inlet of absorption tower, which is obviously superior to other defoamers.

 

2. Characteristics and advantages

FB-975 special defoamer for desulfurization has effective foam control at low concentration, high pH value and low pH value stability. Shear resistance and high pressure resistance; Small particle size and good thermal stability; Good long-term defoaming performance; Good transparency and good solubility.

The advantages are easy to use; Fast defoaming speed, long antifoaming time and high efficiency; Low dosage, non-toxic, non corrosive, bio inert, no adverse side effects; It is very easy to disperse in water, can be well compatible with liquid products, and is not easy to demulsify and leak oil; It not only inhibits the excessive foam on the surface, but also eliminates the dispersed bubbles in the bulk phase.

 

3. Technical index

Item Index
Appearance Uniform viscous liquid
Solid content    %      20
Effective substance content    % 99.8
PH value 6-8
Viscosity   CPS 150-200

 

 

4. Usage

4.1. Test shall be conducted before use to determine the adaptability.

4.2. Stir gently before use, add it into the absorber pit, and then pump it into the absorber through the pit discharge pump.

4.3. It can be diluted or added to the original slurry. In order to increase the accuracy of dosing, dilution dosing is generally adopted. Add after 5-10 times dilution with foaming solution or tap water. The diluent is recommended to be used within 6 hours.

4.4. dosage calculation: the general defoamer dosage is 0.01%-0.07% of foam volume. Under normal operation condition, the slurry foam volume is the standard. The first injection of this product should be a one-time impact type, if the foaming is serious, generally the first injection of 15-20kg, not serious 5-6kg can be, later injection can see foaming phenomenon, add 13kg can be, or fixed monthly dosage of a certain amount, but the determination of the actual dosage is related to the liquid composition, flue gas volume, coal composition and combustion, absorbent, gypsum slurry discharge, etc It is related to the content of sulfur dioxide, and the user can finally determine the dosage according to the actual situation.

4.5. In the process of continuous addition, it can be added by pump, and once in the intermittent process.

 

5. Storage and validity:

The product is a neutral liquid, non-toxic, and stored unopened in the original package at 40. Since the date of production, the shelf life of the product is 12 months. It should not be stored in the environment above 40. It is recommended that the product be stirred gently before use to ensure its typicality. It should be stored in a ventilated and dry place to avoid rain, sun and high temperature; Do not add acid, alkali, salt and other substances to the stored defoamer. Do not store for a long time after diluting with water. The defoamer will not be layered within half a year of storage. If stratification occurs beyond this period, it can be evenly stirred before use, without affecting the use effect.

 

6. Safety and protection:

6.1. This product is a neutral liquid, non-toxic, and you need to wear conventional protective equipment when operating the stock solution;

6.2. In case of splashing into eyes, rinse with clean water in time;

 

7. Packing: the product is packed in 25kg and 50kg polyethylene drums (it can be packaged according to customer's requirements).