43results about How to "The amount added is controllable" patented technology

The invention discloses a water-based environment-friendly colorful texture paint and a preparation method thereof to solve the problems that the existing colorful paint contains an organic solvent, which makes the product toxic, flammable and pollutes the environment. Its composition is calculated in parts by mass: 30-50 parts of emulsion, 20-40 parts of colored particles, 0.5-1.5 parts of thickener, 0.4-0.8 parts of dispersant, 0.2-0.4 parts of wetting agent, 0.5-2 parts of propylene glycol , 0.2-0.5 parts of defoamer, 1-3 parts of titanium dioxide, 3-5 parts of talcum powder, 1-5 parts of calcium carbonate, 0.1-0.3 parts of neutralizer, 10-40 parts of demineralized water. The invention uses modified starch and pigments as raw materials to prepare colored granules, and uses colored granules and compound modified starch emulsion as raw materials to prepare environmentally friendly colorful particle coatings, which have the characteristics of environmental protection, no bleeding, good compatibility, good repeatability and the like.

The invention provides an evaporation concentration method of yeast wastewater. The method comprises the following steps: (1) an evaporation process, namely introducing the yeast wastewater into a heater (1) for heat treatment, and heating the wastewater to 78-82 DEG C to carry out evaporation to obtain a double-phase material flow comprising a gas phase and a liquid phase; (2) a separation process, namely separating the double-phase material flow in a separator (2); (3) steam compression circulation process, namely separating the compressed secondary steam obtained by treating the secondary steam using a steam compressor (3), wherein the compressed secondary steam is recycled to the heater (1) to be reused as a supplemental heat source; (4) a mother solution re-evaporation process, namely again carrying out the evaporation process in the heater (1) by recycling the mother solution separated from the separator (2) into the heater (1) until the solid content concentration in the yeast wastewater is 10-14% (W / W). By adopting the method provided by the invention, steam consumption is reduced, and the wastewater treatment cost is reduced.

The invention relates to a modified polytetrafluoroethylene (PTFE) and a preparation method and an application thereof. All or parts of the PTFE particles are prepared by being coated with polymer or copolymer by an emulsion polymerization method and the weight percent of polymer or copolymer is 40%-60% of the modified PTFE. The preparation method comprises the following steps: adding electrolytemother solution in a reaction kettle; adding mixed monomers of styrene and acrylonitrile with initiator and PTFE emulsion in the reaction kettle while stirring, heating the mixture to 60-65 DEG C to perform polymerization reaction for 2-8h while stirring, then adding crylic acid monomer which accounts for 5% of the weight of the obtained polymer, heating the mixture to 60-70 DEG C for 40-60min toform new copolymer, centrifuging and filtrating the copolymer, drying until the moisture content is smaller than 0.5% and obtaining the desired product; wherein, the solid content of PTFE emulsion is40-70%, the particle size is 0.05mu m-20mu m, and the weight ratio of the electrolyte mother solution, initiator, mixed monomers of styrene and acrylonitrile and the PTFE emulsion is 4:(0.1-4):(30-45):(50-70). The modified PTFE can be used in anti-dripping agent and the like. The modified PTFE prepared by the invention has convenient storage, good dispersity, and controllable additive amount.

A quantitative salt pot comprises a pot body and a grip. A partition plate is arranged in the kettle body, and a conical through hole is formed in the middle of the partition plate. A first sliding plate is arranged on the upper side of the partition plate, a first through hole is formed in the position, corresponding to the conical through hole, of the first sliding plate, and the right side of the first sliding plate penetrates out of the kettle body through a first push-pull rod. A second sliding plate is arranged on the lower side of the partition plate, a second through hole is formed in the left side, corresponding to the conical through hole, of the second sliding plate, and the right side of the second sliding plate penetrates out of the kettle body through the right side of a second push-pull rod. A connecting plate is arranged on the right side of the kettle body, and the first push-pull rod and the second push-pull rod are connected with the connecting plate. The grip comprises a vertical part and two horizontal parts, a sleeve is arranged on the right side of the connecting plate, a cylinder is arranged on the vertical part, the left part of the cylinder extends into the sleeve, and a self-rebounding device in the left-right direction is arranged between the right side of the sleeve and the vertical part. According to the salt pot, quantitative salt can be added every time, the adding amount is easy to control, errors are extremely small, and use is convenient.