4results about How to "Adjust porosity" patented technology

This invention discloses a method for the biological drying of sludge, comprising the following steps: baking biomass materials, mixing the resulting baked product with sludge, biochar materials, and a conditioner for biological drying, thereby completing the sludge drying process. In this invention, by biologically drying the mixture of baked product, sludge, biochar materials, and conditioner, not only can the self-generated heat within the system be used to effectively dewater the sludge in a very short time, but the bioavailability of the microbial carbon source can also be improved, effectively reducing the generation of polluting gases. This method can effectively reduce the emission of polluting gases while achieving rapid dewatering. It has advantages such as simple process, low treatment cost, low energy consumption, high drying efficiency, good dewatering effect, low polluting gas production, and low content of toxic and harmful components in the dried product. It can solve the problems of biomass resource waste and pollution, achieve sludge reduction and resource utilization, and has high returns and good application prospects.

The present application relates to a kind of industrial silicon composite reducing agent prepared with fruit skin humus, and belongs to the technical field of composite reducing agent for industrial silicon smelting.The fruit skin is cut into fruit skin particles, water is added to cover the fruit skin particles, then yeast powder is added and sealed for fermentation to obtain fruit skin humus;non-caking coal powder, fruit skin humus, starch, wood powder and microsilica powder are mixed and then ground to clump to obtain a mixture;the mixture is pressed to form a cylindrical pellet embryo;the cylindrical pellet embryo is placed in an argon environment and subjected to microwave calcination, and then cooled to room temperature in the furnace to obtain an industrial silicon composite reducing agent pellet.The industrial silicon composite reducing agent pellet has a strength of 10-14 MPa, a calorific value of 7200-8000 calories / gram, and a caking index of 49-72, which meets the preparation requirements of industrial silicon pellet reducing agent.

The application relates to a temperature-sensitive adjustable heat rectification porous material and a preparation method thereof, and belongs to the technical field of functional materials and thermal management materials. The temperature-sensitive adjustable heat rectification porous material comprises an asymmetric porous polymer skeleton and a temperature-sensitive polymer network embedded in the interior of the polymer skeleton, wherein the asymmetric porous polymer skeleton has a pore size difference in the thickness direction, one side of the asymmetric porous polymer skeleton is a small-pore structure, and the other side is a large-pore structure. The temperature-sensitive polymer network is introduced into the asymmetric porous polymer skeleton, so that the heat rectification is changed from a static behavior to a dynamic adjustable behavior. Under a low-temperature condition, the temperature-sensitive polymer absorbs water to expand, the pore size of the large-pore side is reduced, the pore size difference is reduced, and the heat rectification ratio is reduced; under a high-temperature condition, the temperature-sensitive polymer is dehydrated to shrink, the pore size of the large-pore side is increased, the pore size difference is increased, and the heat rectification ratio is increased. Through the mechanism, the heat rectification ratio can be adjusted and changed in the range of 25-40 DEG C, and the heat regulation capacity is remarkably improved.

The present invention discloses a high-current high-temperature superconducting conductor based on a central skeleton of a twisted cable structure. The conductor structure includes: a full-cable central skeleton composed of a spiral structure of a metal cable or a perforated stainless steel tube or a perforated copper tube or a stainless steel narrow strip wound by multi-stage twisting, a number of high-temperature superconducting sub-cables, a full-cable protective wrapping and a metal armor. The structures of the high-temperature superconducting sub-cable from the inside to the outside are: a sub-cable central skeleton, a sub-cable central skeleton wrapping, a high-temperature superconducting tape and a sub-cable wrapping. The sub-cable central skeleton is formed by multi-stage twisting of metal strands; the high-temperature superconducting tape is wound on the sub-cable central skeleton. The present invention has a compact structure, the conductor has a self-supporting function, and has the ability to carry high current under high fields. At the same time, it can reduce the AC loss of the conductor, improve the flexibility of the conductor and enhance the cooling capacity of the conductor, thereby improving the stability margin and operation reliability of the high-temperature superconducting conductor.