41results about How to "Short investment" patented technology

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.