41results about How to "Improve adsorption capacity" patented technology

The invention discloses a method for filtering gas through electrified insulating particles, belongs to the technical field of air purifying methods, aims at solving the problem that in the prior art, high-voltage electrostatic precipitation is limited by specific resistance of removed substances and the problem about activated carbon adsorption capacity saturation, and provides the method for filtering gas through the electrified insulating particles. According to the method, the insulating particles are subjected to friction electrification by means of mechanical movement or vibration or the like, gas flows through gaps between the electrified insulating particles making contact with one another or gaps between the particles and a container, and static particle adsorption, filtering and dust removing are conducted. The method for gas filtering is suitable for being used in many fields of industrial dust removing, haze air purifying and the like.

The invention provides a method for activating micropores of biochar and an application of biochar in removal of ammonia nitrogen from water. In view of the special composition of small organic molecules attached to the biochar, effective removal of compounds from polarity to weak polarity can be achieved through the activation method, and more active sites can be exposed, so that the adsorption capacity of the biochar for ammonia nitrogen is increased, and technical support is provided for resource utilization of cow dung and removal of ammonia nitrogen from water. The biochar is prepared under the condition of oxygen limiting, and the modified biochar is obtained by using the activation method; the preparation method has simple required equipment, a simple operation process and no secondary pollution to the environment, the prepared modified biochar has a high removal efficiency of ammonia nitrogen, and the adsorption amount of ammonia nitrogen can be increased by 1.07-1.34 times, sothat the ammonia nitrogen in the water body is removed more effectively, high value utilization of cow dung is also realized, and the utilization efficiency of cow dung is improved; and far-reachingeconomic, social and environmental benefits are achieved.

The invention relates to the technical field of coatings, and particularly discloses a water-based curtain-coating two-component polyurethane coating and a preparation method thereof. The water-basedcurtain-coating two-component polyurethane coating comprises a component A and a component B; the component A is prepared from, by mass, 45-60% of a waterborne polyurethane dispersion, 0.8-1.2% of a wetting dispersant, 0.5-1.2% of an antifoaming agent, 15-20% of a pigment, 4-5.3% of a cosolvent, 0.3-0.6% of a leveling agent, 0.2-0.5% of a thickener, and the balance of deionized water; the component B is an isocyanate curing agent; and the mass ratio of the component A to the component B is (4-6):1. The coating is good in dispersity and stability, a film obtained after curtain coating is smoothin appearance, the defects of flooding and floating, prickly heat, pits and the like are avoided, and the coating has excellent use performance.

The invention discloses a process for producing hydrochloric acid by brine. The process comprises the following steps that (1) brine is subjected to ammonia removal and salt dissolving, and is then conveyed into saline water for refining to obtain refined saline water; (2) the refined saline water is subjected to resin tower treatment to obtain hyperpure saline water; (3) the hyperpure saline water is subjected to electrolysis to obtain hydrogen gas and chlorine gas; the rest light saline water after electrolysis is concentrated and is then added with salt to be conveyed into the salt dissolving working procedure in the step (1); (4) the hydrogen gas is subjected to hydrogen gas treatment; the chlorine gas is subjected to chlorine gas treatment; then, hydrogen chloride synthesis is performed to obtain a finished product of hydrochloric acid; hydrogen chloride gas residual after the hydrogen chloride synthesis is absorbed; then, a hydrochloric acid solution is obtained and is conveyed into the resin tower treatment work procedure in the step (2). The process has the advantages that the outsourcing of dry salt is not needed; the whole bittern hydrochloric acid production is realized; meanwhile, the use of an additional conditioning agent is avoided; the cost is reduced; the foreign expansion water quantity can be reduced; the power consumption and the energy consumption are reduced.

Described is an adsorbent, a vacuum heat insulating material having the same and a refrigerator, which are capable of adsorbing a target material in a reduced pressure environment. A refrigerator includes an outer casing forming an exterior, an inner casing provided inside the outer casing and forming a storage chamber and a vacuum heat insulating material positioned between the outer casing and the inner casing, and including an adsorbent that adsorbs a heat transfer medium. The adsorbent includes a first adsorption component provided to adsorb oxygen, and including a transition metal oxide having an oxygen deficiency structure, and a second adsorption component provided to adsorb moisture.