33results about How to "Eliminate or reduce pollution" patented technology

The invention discloses a special humic acid-urea coated rhizobium fertilizer for soybean and a preparation method thereof and belongs to the technical field of special fertilizers for crops. The special humic acid-urea coated rhizobium fertilizer for soybean comprises the following raw materials in parts by weight: 50-350 parts of humic acid-urea coated rhizobium agent composition, 200-500 parts of 5% humic acid coated urea, 200-500 parts of triple superphosphate, 100-400 parts of potassium sulfate and 20-200 parts of calcium magnesium phosphate. Compared with the prior art, the fertilizer and the preparation method disclosed by the invention are an important measure for improving the yield and quality of the soybean, reducing the production cost, protecting the ecological environment and developing organic green agriculture and ecological agriculture.

The present invention relates to an equipment for recovering propylene gas produced in the production of polypropylene by using self method and its process. It includes three portions of tail gas compression and condensation system, vacuum recovery system and membrane separation system, the vacuum recovery system can evacuate the low-pressure propylene gas from flash still and pressurize it and feed it into wet gas cabinet instead of emptying, and the membrane separation system can make the nitrogen gas containing propylene gas in the propylene storage tank undergo the separation treatment process to separate propylene gas from nitrogen gas to recover propylene gas instead of emplying.

The invention relates to a tire-moved-type construction waste treatment device comprising a vehicle frame with a tire-type walking device. A feeding device, a construction waste special-purposed separation and crushing device, and a vibration screen are sequentially arranged on the vehicle frame from one end to the other end. A first discharging belt conveyor tilted upward on a direction towards the feeding device, and a second discharging belt conveyor tilted upward on a direction opposite to that of the first discharging belt conveyor are sequentially arranged between the construction waste special-purposed separation and crushing device and the vibration screen. The upward-tilting end of the first discharging belt conveyor is arranged above the feeding end of the second discharging belt conveyor. A sundries discharging port is provided on the vibration screen. An upward-tilted material returning belt conveyor is arranged between a coarse material discharging port of the vibration screen and a raw material chamber. According to the invention, an entire construction waste treatment process is accomplished by using a single vehicle. The structure is compact, device integral length is reduced, and the device can be moved rapidly according to actual situations. Therefore, manufacturing and operating costs are reduced.

The invention discloses a method for preparing O, O-dialkylthiophosphoryl chloride without waste residue, which is characterized in that: the method comprises using dialkyl chlorophosphite as an intermediate, and reacting with a strong Lewis acid metal chloride under the action of a strong Lewis acid metal chloride O, O-dialkyl phosphorothioate is chlorinated to prepare O, O-dialkylphosphorothiochloride of the following general structure: the chemical reaction equation is as follows: the invention provides a simple process route, reaction Mild conditions, simple post-treatment, low production cost, and a process method for preparing high-content O, O-dialkylphosphoryl thiochloride, which is convenient for industrial transformation; the method eliminates or reduces pollution, strictly controls the process and eliminates post-treatment Generation of sticky sulfur residues.

The present invention relates to a portable die cleaning apparatus and a die cleaning method using the same. It is an object of the present invention to provide a portable die cleaning apparatus capable of performing a plasma cleaning process for a surface of a die, especially surfaces of cavities in the die, by using plasma discharge generated in a reaction chamber that is defined on the die, without separating the die. In order to achieve this object of the present invention, the present invention provides a portable die cleaning apparatus for cleaning a surface of a die using plasma discharge. The portable die cleaning apparatus of the present invention comprises a frame with an open lower face to define a reaction chamber facing the surface of the die between the surface of the die and the frame itself when the frame is seated on the die; and an active electrode that is placed at a position opposite to the die in a state where the die is electrically grounded, and receives electric power from an external power supply to generate plasma in the reaction chamber.

The invention discloses a method for producing extruded and expanded pet feeds by using banana lees. The technical scheme is that the method comprises the steps of: drying and crushing the lees, adding starch, adjusting water content, expanding and forming. By adopting the method, coarse fibers, proteins and minerals such as K, Na, Ca, Mg and the like in the banana lees can be recycled and changed into useful materials; by conducting extruding and expanding treatment, effects of processing and formation can be achieved at the same time, the coarse fibers and the proteins in the banana lees can be degraded and modified and the digestion, absorption and utilization ratio of the coarse fibers and the proteins can be improved; and the pollution to the surrounding environment can be eliminated or reduced. By using the banana lees to producing the extruded and expanded feeds, the effect of reusing the proteins, the starch and the dietary fibers is achieved, the nutritional components of the feeds are improved, the production process is simplified, the processing cycle is short and the economic efficiency is high.

The invention discloses a method for preparing dietary fiber of lotus seed shells by virtue of microwave-assisted enzymolysis. The method comprises the following steps of: drying the lotus seed shells, smashing and sieving the dried lotus seed shells to obtain solid powder of the lotus seed shells, adding water into the solid powder to obtain a mixture of the lotus seed shell powder and the water, performing microwave-assisted enzymolysis treatment on the mixture by complex enzyme A (namely alpha-amylase and saccharifying enzyme), performing microwave-assisted enzymolysis treatment on the mixture by complex enzyme B (namely papain and bromelain), inactivating the enzyme, performing static settlement on the mixture at a low temperature, filtering the mixture, and drying filtered residues, thus obtaining the dietary fiber of the lotus seed shells. The method can be used for achieving effective appreciating and efficient utilization of the lotus seed shells, namely by-products from processing of lotus seeds, and avoiding waste of resources and environment pollution caused by abandoning or incineration of the lotus seed shells (accounting for 35% of nelumbo nucifera gaertn in mass) in the prior art. The method is simple to implement and low in production cost, and the prepared product is high in purity and yield.

The invention relates to a horizontal well leakage prevention double oil pipe isolation circulation mechanism. In the sand flushing operation of horizontal wells, when the length of the non-flowing isolation space is greater than the length of the perforated well section, as the pipe string continues to penetrate into the bottom of the well, the more perforated sections are isolated, the more effective the leakage prevention function will be. The more obvious, the higher the efficiency and utilization of the working cycle fluid. The technical solution adopted in the present invention includes two identical double-layer oil pipe isolation steering joints connected through the double-layer oil pipe string structure, which are respectively an upper double-layer oil pipe isolation steering joint and a lower double-layer oil pipe isolation steering joint.

The invention discloses an epoxy resin based graphene oxide nanometer leather tanning agent. The epoxy resin based graphene oxide nanometer leather tanning agent is prepared from, by mass, 40-60 parts of graphene oxide dispersion liquid, 25-40 parts of epoxy chloropropane, 15-25 parts of trimethylolpropane, 0.3-0.8 part of an oxidizing agent, 0.1-0.4 part of a strong alkali solution and 0.04-0.08 part of beta-cyclodextrin. The invention further discloses a preparation method of the epoxy resin based graphene oxide nanometer leather tanning agent. Graphene oxide, epoxy chloropropane and trimethylolpropane are adopted as reactant, sodium hydroxide is adopted for manufacturing the strong alkali environment (pH=11-13), and the epoxy resin based graphene oxide nanometer leather tanning agent is prepared and obtained through the catalytic action of beta-cyclodextrin and can be used for leather tanning. The tanning effect of the agent is equal to that of a chrome tanning agent, the contraction temperature of leather can be 105 DEG C, and the tensile strength, tear strength, elongation at break and other performance are equal to those of chrome tanned leather.