37results about How to "High degree of cleanliness" patented technology

The invention relates to a waste pyrolysis system with adjustable oil, gas and carbon and a method. The system comprises a pre-reaction section, a main reactor, a conditioner and a particle separator. The front of the pre-reaction section is connected to a feeder and the tail of the pre-reaction section is connected to the main reactor. The conditioner is connected after the main reactor. The particle separator is connected after the conditioner. In specific, waste having a water content not more than 60% is fed into the pre-reaction section through the feeder, reacted waste is fed to the main reactor, residue coke generated after the reaction is finished is fed into the conditioner and a generated volatile material is discharged in a forced manner into the conditioner to be contacted, reacted and conditioned with the residue coke at the same time. The conditioner achieves conditioning of the residue coke and the volatile material at the same time. The volatile material after being conditioned is fed into the particle separator to output a clean volatile material. The residue coke after conditioning has a calorific value of 3.37-6.74 MJ / kg, and can be used as building raw materials or is conveyed to a sanitary landfill. The working temperature of the pre-reaction section is 105-298 DEG C and an inert gas or flue gas is fed into the pre-reaction section. The working temperature of the main reactor is 450-650 DEG C. The working temperature of the conditioner is 700-900 DEG C. The system and the method can obtain oil with better quality and more combustible gases and are adapt to changes of the water content of the waste.

This is a complex arrangement technology of three dimensions recall and inject drawing and printing for ready-to-wear clothes. It contains following steps: To do the arrangement for the ready-to-wear clothes: To arrange of polymerization and skein for them. Be arranged them in three dimensions in finished form by thermo-compression or to spur paint paste on their surface. To cure them on fire to fix colors, then to arrange them in their dimensions and pack them.

The invention relates to the technical field of chemical industry and comprehensive utilization of resources, and discloses a vanadium extraction method for sodium vanadium extraction tailings. The method comprises the following steps: (1) adding magnesium oxide powder or magnesium hydroxide fine powder and an optional leaching aid to the sodium vanadium extraction tailings, then adding water, mixing and ball milling to form a homogeneous slurry; (2) The slurry is placed in an autoclave to carry out a hydrothermal reaction; (3) after the reaction is completed, filter to obtain a vanadium-containing solution and a vanadium extraction residue. The invention adopts the whole wet hydrothermal extraction process, does not generate waste gas, has a high degree of cleanliness, and is environmentally friendly; compared with the traditional pyrotechnic process, the method of the invention has low production cost, and the vanadium in the vanadium tailing slag is extracted by sodiumization. The leaching rate can reach up to 69%, and a large amount of vanadium can be recovered, which has good economic and social benefits; the method of the invention is simple and feasible, and the vanadium-containing solution can be concentrated and precipitated after vanadium. % or more flake vanadium.

The invention discloses a preparation method and application of anhydrous calcium terephthalate whiskers. The preparation method of anhydrous calcium terephthalate whiskers includes the steps of subjecting ammonium terephthalate solution and calcium hydroxide slurry to reaction to obtain a precursor, and continuing the reaction at 120-150 DEG C in a high-pressure kettle for 1-6 h to obtain the anhydrous calcium terephthalate whiskers. The preparation method is green, low in cost and high in cleanliness level. The production process is free of three wastes, and the obtained anhydrous calcium terephthalate whiskers have large length-diameter ratio, high crystal strength and significant reinforcement effect. During the preparation of the calcium terephthalate whiskers from ammonium terephthalate and calcium hydroxide, isolated ammonia water may continue to dissolve terephthalic acid for next cycle or remaining water is also suitable for reuse after ammonia gas is recycled by means of ammonia steaming, and the whole process is free of three wastes and belongs to clean production.

The invention belongs to the technical field of leather making and discloses a method for making leather without tanning agents. First, the bare hide is dehydrated in a controlled manner using a molecular sieve-polar organic solvent composite dehydration medium. Subsequently, tanning agent-free leather is produced by increasing the surface roughness of the hide and reducing its surface energy. The present invention does not use any metal or non-metallic tanning agent, and has the advantage of being environmentally friendly; the present invention breaks the distribution balance of moisture between the bare hide and the polar organic solvent, and realizes the "from raw hide to polar organic solvent" for the moisture in the bare hide. Solvents, and then from polar organic solvents to molecular sieves" multi-media self-driven directional controllable dehydration, promotes continuous and controllable removal of moisture in raw hides, effectively solves the problem of low dehydration efficiency when pure polar organic solvents dehydrate bare hides, Many bath changes are required for dehydration, organic waste liquid is difficult to reuse, etc., and the molecular sieve-polar organic solvent dehydration system is easy to recover and can be used for multiple cycles for controllable dehydration of bare leather, providing a new clean system leather technology.

The invention relates to a processing method of green tea, in particular to a processing method of Guizhou Lixiang flat green tea, comprising the following steps: ① green tea withering; ⑤ Step-by-step drying; ⑥ Sieving; ⑦ Titian. The Guizhou Lixiang flat-shaped green tea produced by the method of the invention has a flat, straight and even appearance, emerald green color, long-lasting fragrance, and fresh, mellow and sweet aftertaste. Realized Guizhou Lixiang flat green tea scale, automatic continuous processing and production, high degree of cleanliness, greatly reduced labor intensity, improved production efficiency, reduced production cost, and improved product quality.

The invention belongs to the technical field of leather processing and discloses a method for improving the performance of organic chrome-free tanned leather. The invention can effectively improve the color fastness, shrinkage temperature and physical sensory properties of finished leather through the organic synergy of tanning agents, dyeing and finishing materials and processes, and produce high-performance leather. The invention does not use formaldehyde-containing and chromium-containing leather chemical materials in the whole production process. Therefore, compared with the existing leather production technology based on chrome tanning, the present invention can completely eliminate chrome pollution, has a higher degree of cleaning, and is more friendly to the environment; Compared with the traditional leather production method, the leather produced by it does not contain formaldehyde and chromium, and its physical properties are obviously better, so it has higher market application value.

The invention discloses a clean preparation method of submicron calcium terephthalate. The preparation method comprises the following steps: a calcium hydroxide slurry with a multihole nozzle is introduced from the upper end, and an ammonium terephthalate solution with a dispersion modifier is introduced through the side surface of a high-speed centrifugal atomizer; the calcium hydroxide slurry and ammonium terephthalate solution are sufficiently mixed in a mixing chamber of a jet reactor, and enter a closed tank reactor via a diffuser chamber; and the materials are heated to the specified temperature while stirring to continue react for some time, thereby obtaining the calcium terephthalate. The method is green and environment-friendly, has high clean degree, and does not generate three wastes in the preparation process; and the obtained product is submicron particles. In the submicron calcium terephthalate preparation process, the separated ammonia water can continue dissolving terephthalic acid to enter the next circulation, or after ammonia gas is recovered by an ammonia evaporation technique, the residual water can be recycled, so the whole process does not generate three wastes and belongs to clean production.