43results about How to "No waste of raw materials" patented technology

The invention relates to a liquid-supplying system of a hemodialysis center, which supplies medicinal liquid A and B to a hemodialysis machine. The liquid-supplying system of the hemodialysis center comprises a liquid-absorption conveying device, a liquid-storing device, liquid-supplying devices, and associated pipelines, valves and control circuits, wherein the liquid-absorption conveying deviceis communicated with the liquid-storing device through the associated pipeline, pump, valve and plug; the liquid-storing device is communicated with the liquid-supplying device A through the associated pipeline, pump and valve; the liquid-supplying device A is communicated with the hemodialysis machine; the liquid-supplying device B is communicated with the hemodialysis machine; the liquid A supplying mode is diverse, and the formula of the liquid A is adjusted at any time according to the different requirements of patients and advice of doctors so as to achieve the best therapeutic effect; pure water is heated by a thermostatic water feeder and enters the liquid-supplying device B to mix with powder B such that the mixture can be used at once without stirring, the dialysis effect of carbonic acid can be ensured and the raw materials are not wasted; the liquid is completely separated from air so as to effectively prevent the growth of bacteria and the generation of biomembrane on the inner wall of the liquid-supplying pipes; and the liquid-supplying system is time-saving, labor-saving, liquid-saving, sanitary, safe and reliable, and has simple operation and no pollution.

The invention discloses a preparation technology of biodiesel produced from refined grease. The preparation technology comprises the following steps: 1) selecting and using qualified raw grease, methanol and a catalyst; 2) dissolving the catalyst in the methanol in an appropriate proportion; 3) performing an ester interchange reaction of a prepared catalyst methanol solution and the grease under appropriate conditions; 4) performing first-time water washing and liquid separation to remove the catalyst and glycerin which is produced by the ester interchange, and rectifying and recycling the superfluous methanol; 5) performing secondary water washing and dehydration to produce a non-standard product A; 6) obtaining a non-standard product B and tower-bottom heavy oil through vacuum distillation of the non-standard product A; and 7) obtaining a biodiesel product in strict conformance with national standard GB / T 20828-2007 by deep deacidification, water washing and dehydration of the non-standard product B. The preparation technology has stable technological processes, and can fully realize recycling of the excess methanol, reuse of soft water and saving of energy and resources. The by-product crude glycerin has extremely few impurities and good quality, and can be excellently applied to a production line of the biodiesel produced from non refined grease, and no raw material may be wasted.