41results about How to "Short investment" patented technology

The invention discloses a high-concentration high-chroma wastewater treatment technique which comprises steps as follows: wastewater is treated through primary and secondary anaerobic tanks, a distribution reservoir, primary, secondary and tertiary aerobic biological tanks; the qualified water degraded by aerobes naturally flows into a clear water disinfection tank; the disinfected water naturally flows into a filter tank, thereby removing suspended substances and residual color by adsorption and filtration; the qualified filtered water flows back to the distribution reservoir to dilute the circulating water, and excess water enters a clear water reservoir; and the water outlet of the clear water reservoir is provided with a flow controller for controlling the balance between the overflow discharge water flow and the raw wastewater water inflow of the sewage pump. The treatment technique disclosed by the invention is suitable for treating multiple types of high-concentration high-chroma wastewater, such as garbage leachate, dye mother liquor, dyeing and finishing wastewater, alcohol waste fermented liquor in cane mills, DDNP waste liquor, soy sauce liquor, traditional Chinese medicine wastewater, electrophoretic paint wastewater, slaughter wastewater, aquacultural wastewater and the like. The invention not only can treat multiple types of high-concentration high-chroma wastewater to achieve or exceed the discharge standard specified by China, but also can simplify the complex high-concentration high-chroma wastewater treatment, thereby greatly lowering the wastewater treatment cost.

The present invention is fatty acid ester oxyalkylating catalyst and its preparation process, and provides one kind of catalyst with oxyalkylating activity on fatty acid ester. The catalyst consists of compound active aluminum-magnesium component and active clay in the weight ratio of 3-7, and is ring shaped. The preparation process includes the steps of adsorption, washing, stoving, mixing, extrusion to form, drying, showering and roasting. The catalyst of the present invention has excellent reaction activity and selectivity, and can inhibit side reaction during the production process. The product produced adopting the catalyst has no need of post-treatment and has less side products, and this results in simplified operation process.

The invention relates to a process for preparing -20# biodiesel from waste lipin based on a rectification process. The waste lipin is used as a raw material and is added with methanol and other catalysts for reaction to prepare a product through a six-step method of material selection, hydrolysis, fractionation, esterification, neutralization, dealcoholization and rectification; the process overcomes the disadvantages that biodiesel produced through the prior preparation method has low output, few breeds and poor performance and can not be suitable for a low-temperature environment, enlarges the functions of the prior biodiesel, provides a new approach for the production of new breeds of the biodiesel; the product has stable performance and good applicability, does not solidify between room temperature and 20 DEG C below zero, can be freely mixed with diesel, has no toxicity or corrosion performance, does not damage a mechanical part, is easy to biodegrade, is environment-friendly, can be used for all weather, has high boiling point and flash point, belongs to non-dangerous goods and has safe storage and transportation and huge commercial potential; and the method is suitable for the production of preparing biodiesel with low freezing point through using the waste lipin as the main material.

The invention relates to a process system for the innocent treatment on electroplating sludge by utilizing a metallurgic sintering blast furnace. The process system comprises an electroplating sludge nuclear forming system, a nuclear bulge pre-coating system, a secondary composite pellet manufacturing system, a halfway reduction detoxification system and a blast furnace system. By utilizing a secondary material composite pelleting technology, in a colter uniformly-mixing pelleting system, the electroplating sludge and reductive metallurgic waste gravity fly ash form pellet cores with the appropriate granularity. In the pre-coating process, no secondary pollution is produced by the electroplating sludge by adopting the fly ash as a pre-coating material. The electroplating sludge enters a conventional pelletizing device to be subjected to the secondary composite pelleting after the electroplating sludge is pre-coated, then the electroplating sludge is transported to be subjected to metallurgic sintering and then enters a blast furnace to be thoroughly detoxified so as to realize the integrated use of resources. By adopting the process system, the electroplating sludge is thoroughly detoxified, and no new harmful substance is generated; little construction expense is used, and the operation expense is low; the resources can be effectively utilized, and a brand new way is developed for the harmless treatment of the electroplating sludge and the integrated use of the resources.

The invention discloses a preparation method for 2-hydroxy-4-methylthio-calcuim butyrate. The method is characterized by comprising the following step of reacting reaction raw materials comprising a 2-hydroxy-4-methylthio-butyric acid solution and one or more of calcium hydroxide, calcium oxide and calcium carbonate with ammonium bisulfate introduced as an organic reaction catalyst to obtain the 2-hydroxy-4-methylthio-calcuim butyrate. The method has the advantages of being mild in reaction, free of specific stirring tools, high in universality, less in equipment investment, low in production cost, convenient to use, mild and controllable in the whole reaction process, low in probability of product decomposition or coking rate, complete in reaction, time-saving, high in product yield, purity and yield, energy-saving and more environment-friendly.

The invention discloses a method for molding the high-pressure rotational spray expansion post in sink area. Wherein, forming a trapezium expansion disc on the post formed by rotational spraying slurry injection according to the segment pressure or the injection time; inserting section steel as anti-drawing material into the post. The invention can increase the upright bearing ability and improve the horizontal bearing ability; especially at the interface of soil, it can eliminate the effect of horizontal displacement, with lower cost, short time, easy construction, lower soil occupied and saved land resource. The invention can be used to strengthen the foundation in large distortion condition, to reduce cost and improve economic benefit, with wider application.

The invention discloses a method for extracting and dyeing reddish-brown natural dye of oil-tea camellia shells. After cleaned and air-dried, the oil-tea camellia shell is smashed and leached with taking sodium carbonate aqueous solution as solvent. Filtered filter residues are repeatedly leached with the sodium carbonate aqueous solution. Filtrate is combined to obtain natural dye concentrate of the oil-tea camellia shell by pressure reduction, distillation and concentration. The obtained concentrate is subjected to pectin removal, filtration, pressure reduction, distillation, concentration, spray and drying to obtain the powder natural dye of the oil-tea camellia shell. Pretreated pure cotton fabric can be dyed with the natural dye of the oil-tea camellia shell to obtain fabric which is uniform in gloss. The method for extracting and dyeing the natural dye of the oil-tea camellia shell is safe and environment-friendly by taking the oil-tea camellia shell as a raw material so as to effectively utilize natural waste. The fabric dyed by the method can be made into clothing that is safe, free of carcinogenic and deforming action or causing skin sensibility, good in compatibility with ecological environment and available for biodegradation.

The present invention discloses a phosphorus-nitrogen high-efficiency expansion wood fire retardant; urea phosphate crystallization mother liquor is taken as the raw material and Fe, Mg, Ca, A1 metalion activating agent and boric acid are added and mixed evenly; and then the solution is put into a decompression distilling device for decompression distillation for 1.5 to 2 hours with a temperatureof 80 to 90 Celsius degrees after water bath heating; the water content of mother liquor at then is less than 8 percent; the crystallization mother liquor after water removal is put into a polymerizing-kettle which is equipped with an electric mixer; the electric mixer and heating switch are switched on for heating at a speed of 4 to 6 Celsius degrees per minute and the rotation speed of the electric mixer is adjuted at 150 rpm which is comparatively low. Two gases of ammonia and carbon dioxide are input through a gas steel cylinder; the pressure of ammonia is 0.4 to 0.7 MPa and the carbon dioxide pressure is 0.3 to 0.6 MPa in the process of inputting the gases; the total pressure in the kettle is kept at 1.2 to 1.4 MPa; when the reaction temperature reaches 160 to 229 Celsius degrees, the reaction temperature is kept for 1.5 to 2 hours and the temperature of the reaction product is reduced to the normal temperature; the reaction product is crushed to fire retardant powder. The present invention boasts of simple process, easy industrialization, low cost, low investment, short treatment cycle, rational phosphorus-nitrogen proportion and excellent synergetic fire retardant effect; in addition, the present invention is clean without pollution.

The invention discloses a method of fatty acid ester alkoxylating and its reactor, which is to solve problems of unsuitness of the current alkoxylating method for alkoxylation of fatty acid ester not containing reactive hydrogen and after-treatment existence and unsuitness of the current reactor for this inventive method, presents employing composite aluminum-magnesium catalyst for the method and reactor in this invention, the reactor comprising catalyst fixing bed, tower still, heat-exchange machine and circulating pump, the method in this invention is characterized by no existence of after-treatment, simple process, small investment for device, short producing time, low energy consumption, no environmental pollution and wide application range.

The invention relates to a preparation method of ethoxypropylene, which solves the technical problems of high cost, low yield, low return, long reaction route, many by-products and environmental pollution in the prior art synthesis method of ethoxypropylene . The invention provides a preparation method of ethoxypropylene, which comprises the following steps: Step S1: In the reaction stage, acetone gas and ethylene gas are passed into a fixed-bed reactor, and the fixed-bed reactor is equipped with modified The catalyst catalyzes the addition reaction of ethylene under normal pressure of 120-180°C; step S2: product separation, the gas after the reaction in step S1 is condensed, separated, and recovered to obtain pure ethoxypropylene. The invention is widely used in the technical field of organic synthesis.