Technical Approach to Saving Energy and Reducing Consumption in Paint Production

【China Aluminum Industry Network】 Under the dual pressure of rising raw material prices and falling sales prices, paint manufacturers need to make efforts to save energy and reduce consumption if they want to continue to maintain a certain profit level. The way to save energy and reduce consumption is mainly from the aspects of management and technology. Relying on enhanced management to achieve energy conservation and consumption reduction is often limited, relying on technological improvements to achieve energy conservation and consumption reduction has great potential to tap. Therefore, relying on the use of new equipment, new processes, and new materials, efforts to open up ways to save energy and reduce consumption have become a top priority for coating manufacturers. According to the main factors that affect the cost of paint production process, determine the key points of energy conservation and consumption reduction. The following aspects may provide more ideas for energy conservation and consumption reduction of enterprises: 1, reduce the paint The use of standard color formulations is the main way to reduce the paint. The engineering and civil market paints can be applied to computerized color formulations, produced by self-produced base paints and purchased general-purpose colorants; industrial paints have less color, and accumulate formulas in the small, medium, and mass production stages to large Bulk supply can form standard semi-finished and finished product formulations. 2, reduce solvent evaporation The production of resins and solvent-based coatings requires a large amount of liquid raw materials, and the nakedness of the liquid raw materials during production and transportation is the main factor causing the solvent to evaporate. Closely transporting the materials is the key to solving the problem. The main methods include: Application of PLC (Programmable Control System) to control the transport of solvent and liquid raw materials from the Class 1 storage tank to the Class 2 storage tank to the production work area; Application of closed grinder; Application of closed automatic and manual toning machines; Application of closed automatic filter packing machine. 3, reduce the consumption of materials used to clean the grinder It is impractical to use a fixed grinder for each color of a product, and it is very important to clean the grinder properly. Firstly, the materials left in the equipment during the cleaning process should be reserved in the formula, and the cleaned materials must be calculated and reserved for the next use. 4, reduce the consumption of ingredients Since most liquid resins have a large viscosity, there is a lot of residue after the resin is poured out of the container. Therefore, steam can be heated before the ingredients to achieve substantially no residue. 5, balance product price In order to meet the performance requirements in the product development process, most of them choose good quality and high-priced raw materials. When the products enter the market, it is extremely important to constantly optimize the formula and select alternative materials. Through step-by-step trials, we eliminated the problem of excess quality little by little and explored formulas that are more cost-effective. 6, reduce energy consumption The production of paint water mainly comes from the consumption of cooling water. The cooling water can be recycled through public works. In addition, the water used for water treatment can also be used for cooling. Steam heating the liquid material can be provided using the residual heat of the resin reaction. Through the statistics of the operation of the equipment, the period of operation with a large amount of consumed electricity is designed to operate when the electricity is low. Through the above approaches, energy consumption can be greatly reduced. 7, recycling waste solvent The usual waste solvent recovery is intermittent batch treatment. The waste solvent generated by the scouring equipment pipeline is first collected in a waste solvent storage tank, then pumped into the distillation tank of the waste solvent treatment unit, and vacuum distillation is performed using low pressure steam. The vaporized solvent vapor is condensed in the condenser, the condensate passes through the separator, the solvent is recovered into the receiver, and the separated water is discharged into the biochemical treatment. The steamed mixed solvent can be used to prepare low-grade paint, and can also be reused as a detergent. Of course, the equipment and process conditions of each coating company are different, and there are differences in the ways of energy saving and consumption reduction. It is necessary to rationally use resources according to its own technical characteristics and to make energy conservation and consumption reduction a key long-term technical task.