4results about How to "Reduce washing" patented technology

The invention discloses a production method of chlorhematin, which is high in purification rate, high in production utilization rate, high in production safety and free of pollution. The production method is characterized by comprising the following steps: heating reaction, precipitation and crystallization, fractionation and recovery, primary refining and secondary refining. According to the invention, volatilization of acid gas is effectively prevented, and equipment corrosion and environmental pollution are reduced; the reaction temperature in the reaction kettle can be rapidly increased and kept, and the reaction is sufficient; on the premise that the washing effect is guaranteed, the washing and precipitating time is shortened, time is saved, and cleanness and thoroughness are achieved; impurities wrapped in the crystals are effectively removed, and the purification rate is high; the yield of each parallel production line single reaction finished product is increased by dozens of times, and the content of the finished product can reach 97% or above.

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a UV printed fabric color fastness improving process, which is characterized in that a GD-588 epoxy crosslinking curing agent of American 3M company is mixed with water at normal temperature to prepare a finishing liquid, and the finishing liquid is uniformly coated on a printed fabric to be treated through a roller coating method. A GD-588 epoxy crosslinking curing agent of the American 3M company is adopted, the color fastness of the UV printed fabric is improved to 4-5 levels, treatment is conducted through a roller coating method, finishing liquid is evenly distributed on the fabric, a protective film is formed, combination of dye and fibers is enhanced, the dry and wet friction resistance of the treated fabric is improved, the hand feeling is not affected, it needs to be ensured that the fabric is washed cleanly, and the color fastness of the UV printed fabric is improved. The surface active agent residue is avoided, proper baking conditions are selected, and the roller coating method is simple in process, energy-saving, capable of reducing water washing and free of influence on subsequent processing.

A kind of paper pulp mechanical pressurization preparation system, the system includes pulper, cooking device, washing device, screening device, bleaching device, concentration device, pulper, cooking device, pulp filter press, washing device, screening device, bleaching device and concentration device are sequentially connected installation, washing device is made of three to five stage washing machine, wherein still including pulp filter press;Pulp filter press is connected and installed at the rear end of cooking device or the front end of any stage washing machine in the first three stages of washing device.The system of the utility model improves the pulp yield of paper pulp pulping, wood raw material conversion rate, environmental protection and the quality and value of paper pulp.

The utility model discloses a kind of oil furnace method soft carbon black production reactors, including reactor cavity, multiple raw material oil oil gun spray system being arranged at the oil inlet end of reactor cavity and the pressure regulating pipeline of another end;Tangential air pipe is provided on the lateral wall outside reactor cavity;Oil gun spray system includes the feed panel of multiple raw material oil guns being arranged, and raw material oil gun is equipped with axial combustion air sheath on the side of sleeve;Raw material oil is sprayed into reactor cavity by raw material oil gun;Axial combustion air enters reactor cavity from axial combustion air sheath place;Tangential wind enters reactor cavity from tangential air pipe place;Powdered carbon black generated inside reactor cavity is discharged after rising to pressure regulating pipeline with carbon black flue gas.The raw material oil gun of axial combustion air sheath is developed, and then large-size reactor is used again, and multiple raw material oil gun system and the design of tangential / axial wind are matched, more flexible and adjustable perfect spray are provided, the problem of screen residue after coking is solved, and primary particle is made larger.