36results about How to "Save acid" patented technology

The present invention belongs to the fermented protein feed producing technology. Grain alcohol residue in 70-94 wt%, straw in 0.6-1.5 wt%, solidifying agent comprising wheat bran, urea and ammoniumsulfate are mixture to regulate the moisture content of grain alcohol residue of 40-60 %; and after further mixing with composite enzyme and composite bacteria, the mixed material is fermented at 25-35 deg.c and under anaerobic condition for 1-5 days to produce the protein feed. The present invention has the advantages of saving in energy source, no pollution and the high protein content up to 28 % in the produced feed.

The invention discloses a biological treatment process for high-sulfur-containing and phenol-containing waste alkali liquid. The process comprises the following steps of: diluting high-sulfur-containing and phenol-containing waste alkali liquid until the concentration of sulfide is not more than 7.0g / L, the concentration of the COD (chemical oxygen demand) is not more than 25g / L and the concentration of Na+ is not more than 0.8mol / L; regulating a pH value of the liquid to be not more than 9.5; and performing treatment process of three steps, namely sludge inoculation, starting of a reactor and treatment of waste alkali liquid, under the conditions that the reaction temperature is 20-35 DEG C, the dissolved oxygen is 3-7mg / L and the hydraulic retention time is 24-96 hours. The invention also discloses a biological treatment device for high-sulfur-containing and phenol-containing waste alkali liquid. The biological treatment process and the biological treatment device have the beneficial effects that the removal ratio of pollutants is high, the removal ratio of sulfide is over 95 percent, and the removal ratio of organic matters is up to 90 percent; the capability of treating the waste alkali liquid is greatly improved, and the waste alkali liquid of which the pH value is about 9.5 can be treated; the cost and pretreatment expenses are reduced; and the secondary pollution is not caused, and the reaction device is small in floor area and is easy to operate.

The invention discloses a method of separation of soap and water, comprising the following steps of: using a screw pump to pump soapstock raw water to a heating and stirring tank; adding sulfuric acidto the heating and stirring tank till the pH value of the soapstock raw water is adjusted to be 6 to 7, and simultaneously starting stirring; adding 1 per thousand cationic-type polyacrylamide with the proportion of 35L in each ton of soapstock raw water; continuing stirring for 1 hour, standing for 4 hours and completing the layering of the soapstock and soapstock sewage; and pumping the upper layer of soapstock to a soapstock pool from the heating and stirring tank by using the screw pump and adjusting the pH value of the lower layer of soapstock sewage to be 7 by using sodium hydroxide andthen discharging the mixed solution to the sewage treatment plant. Or liquid polyaluminium chloride is used for replacing the sulfuric acid and the cationic-type polyacrylamide. The method has littleacid usage, low cost, good economic benefit, low treatment cost and easy treatment of separated soapstock sewage, and also can effectively recycle soapstock, improve economic benefit of enterprises and lead the soapstock resource to be utilized fully.

The invention relates to a steel cord cleaning process, which includes an acid washing part and a water washing part. The steel cord first goes through the pickling part for first cleaning, and then passes through the water washing part for the second cleaning, and the acid-containing water in the washing part circulates into the The pickling part is used. The steel cord cleaning process of the invention has the advantages of good cleaning effect, simple process, thorough cleaning, saving 20-30% of acid, and greatly improving production efficiency.

The invention relates to a polar plate treating method and a compression roller assembly used for the same. The polar plate treating method comprises the following steps of: step a, carrying out plate coating treatment on a polar plate; step b, absorbing water on the surface of the polar plate subjected to the plate coating treatment by utilizing a water-absorbing material to; and step c, carrying out drying treatment on the polar plate. According to the invention, after the plate is coated, the water-absorbing material is directly used for absorbing the water on the surface of the polar plate; and then, the polar plate is dried. The whole treating process can save acid pouring operation, so that not only can acid liquid be saved, but also the problem in the prior art that floating powder is easy to generate due to acid pouring is avoided. Furthermore, the moisture content of the polar plate machined by the method disclosed by the invention meets requirements.

The invention relates to a jig for cleaning furnace tube equipment heat insulation sheets. The jig comprises two supporting seats and three supporting rods, the supporting rods include a first supporting rod, a second supporting rod and a third supporting rod, two ends of the first supporting rod and two ends of the second supporting rod are correspondingly fixed to the vertical middles of two sides of the two supporting seats respectively, two ends of the third supporting rod are fixed to the vertical bottoms of the two supporting seats, and corresponding positions of the three supporting rods are respectively provided with one or a plurality of toothed clamp grooves. When cleaned, a plurality of furnace tube equipment heat insulation sheets can be placed into the toothed clamp grooves of the supporting rods and simultaneously cleaned, cleaning efficiency is improved, acid liquor is saved, the service time of the acid liquor is prolonged, machine maintenance time is shortened, and accordingly, energy production efficiency is improved.