41results about How to "Easy to bleach" patented technology

The invention relates to a whole black liquor large liquor rate cercal grass cooking technology with digester, comprising the following steps: after stocking, preimpregnating the grass raw fiber; loading the preimpregnated raw material into cooking equipment to perform first stage boiling washing to discharge black liqucd of high concentration to obtain straw pulp intermediate product; supplying cooking liquor to the said cooking equipment, and second stage boiling washing the straw pulp intermediate product, and then straw pulp being obtained through washing; repective cycle operating ryegrass large liquor rate displacement cooking and ryegrass large liquor rate displacement cooking black liquor and implementing grading displacement cooking in cooking pan, the research and design of cooking pan grading displacement cooking technology and the corresponding device design and parttern selection being done. The said technology can be used in rebuilting the domestic ryegrass pulp mill. The pulp strength can be enhanced and the quality of the waste liquor is improved. The invention benifits for recovery processing and reduces the discharge of the waste liquor and BOD, COD.

The invention discloses a pearl bleaching technology, which comprises the following steps that: in the sufficient sunshine, pearls after being polished are put into prepared bleaching liquid and soaked at the temperature ranging from 14 to 17 DEG C for 48 to 50 hours for bleaching treatment, and then rinsed and dried; the step is repeated for at least one time; classification: unqualified pearls are screened out and the bleaching treatment for unqualified pearls continues to be repeated for at least one time. In the invention, the format of the bleaching liquid, consisting of a hydrogen peroxide bleaching agent, a composite interface agent, a composite catalyst and a methanol solvent, is adopted for bleaching at the low temperature of 14 to 17 DEG C so as to realize the good bleaching effect under low concentrations of the hydrogen peroxide bleaching agent within a short time, thus effectively reducing the damage to the skin of the pearl and improving the glossiness of the pearl. By adopting the method of the invention, the pearls bleached have better gloss, smooth surface, higher whiteness and good stability.

A preparation method of Fe3O4@PEG@SiO2 artificial antibody for detecting thifensulfuron methyl comprises modifying the surface of Fe3O4 magnetic nanoparticles with polyethylene glycol 2000, coating the surface with SiO2 shell layer to form a core-shell-shell structure, diluting marker molecules in the SiO2 shell layer to form specific recognition site holes complementary with marker molecular structure, size and functionality so as to arrive at molecular selective recognition and detection for target analyses. The preparation method of the artificial antibody comprises the steps of first, preparing Fe3O4 magnetic nanoparticles, and modifying their surface with polyethylene glycol; second, adding the target molecule thifensulfuron methyl, a crosslinking agent and a catalyst, and hydrolyzing to obtain Fe3O4@PEG@SiO2 particles with surface-marked thifensulfuron methyl; third, diluting template molecule with a mixed solution of acetic acid and acetone having a volume ratio of 1:4 to obtain the Fe3O4@PEG@SiO2 artificial antibody with selective recognition marker molecules, the antibody having maximum saturated binding capacity of 41.28 mg/g for thifensulfuron methyl, the absorption rate reaches 0.45 mg/g.min within first 30 min which is 5.34 times and 3.46 times that of a non-marking method.

The present invention is one digestion-free wheat straw-soaking pulp making process. The present invention treats wheat straw and similar papermaking material with the soaking chemical comprising sulfur 20-50 weight portions, magnesium carbonate 10-30 weight portions, aluminum hydroxide 10-30 weight portions and magnesia 30-60 weight portions. During soaking, the material consists of wheat straw in 100 weight portions, sodium hydroxide 5-15 weight portions, hydrogen peroxide 1-5 weight portions, the soaking chemical 0.1-1 weight portions and water 60-85 weight portions. Compared with traditional digesting pulp making process, the present invention has simple technological process, low production cost, high pulp quality, no waste water exhaust, high pulp yield and other advantages.

A combined pulping method, using bamboo wood as raw material. The present invention relates to a combined pulping method, in particular to a biological, chemical and mechanical combined pulping method, which belongs to the technical field of pulping and papermaking, especially biochemical and mechanical Combined pulping technology. The present invention combines the current advanced biotechnology, mature chemical pulping technology and high-efficiency mechanical pulping technology through organic integration, comprehensively utilizes the advantages of the above technologies, conducts targeted combination, and develops a new pulping method. The method of the invention reduces the pollution of the pulping industry and improves the economic benefits of the pulping industry. The combined pulping method has strong raw material adaptability, good pulping performance, and good pulp is suitable for compounding various papers.

This invention involves a papermaking active pulp making, belongs to the papermaking technology. It is composed by the active ingredient, the host medicinal preparation and the auxiliary medicinal. The active ingredient components is: propyl butyl-carbinol polyethyleneoxide ether, oxidized polyethylene emulsion, ethyl alcohol, lauryl benzene sulfonic acid sodium, sodium monoperoxy, alkalinity proteinase and talcum powder; The main medicinal preparation's components is: calcium hydroxide, anthraquinone, sodium monoperoxy, lauryl benzene sulfonic acid sodium, anhydrous sodium sulfite and talcum powder; The auxiliary medicinal preparation's ingredient is: alkalinity proteinase, sodium monoperoxy and talcum powder; Mix the active ingredient, the host medicinal preparation and the auxiliary medicinal preparation. This invention's papermaking active system paste, may not use the alkali, does not need the massive laundering, has avoided the sewage emissions, greatly economize on water. Its thick liquid rate compares with the strong alkali method, may enhance 20%. The use of industrial chemicals is greatly reduced, and so on.

The present invention discloses a pulp-making process of straw fibre. Said process adopts the steps of pretreatment, first digestion and second digestion so as to obtain the invented straw pulp. Said pulp-making process can reduce black liquor discharge by 50%, the silicon content in the black liquor also can be reduced by 50%, and the water also can be saved by 50%.

The invention relates to paper stuff manufacturing process by using grain grass fiber raw material, more concretely, a method of pre-impregnation treatment for raw material. The method uses grain grass fiber as raw material, after first treatment, impregnates the raw material by using heated impregnation liquor. The method cyclically utilizes black liquor thereby reducing environmental pressure caused by the black liquor treatment. Because of the impregnation treatment, fiber can be easily separated from the thick black liquor at first boiling.

The invention relates to paper stuff manufacturing process by using grain grass fiber raw material, more concretely, a method of using black liquor as raw material for primary and secondary boiling liquor for cyclic utilization. The primary boiling is implemented under lower temperature, and while using secondary boiling liquor to displace and discharge the thick black liquor, the fiber in spherical digester which has subjected to the primary boiling is washed, and subjects to the secondary boiling in high temperature, and then pulp is subject to countercurrent washing. The process is used in pulping, and the black liquor can be periodic used thereby reduce environment pollution. Black liquor that per ton of pulp discharges can reduce 50%, and water can be saved for 50%.

The grass fiber pulp producing process includes the steps of pre-treatment, the first digestion, and the second digestion. The present invention features less environmental pollution, saving in water, low power consumption and high pulp quality. The grass fiber pulp product has high whiteness, low hardness, high breaking strength and easy bleaching.

The invention discloses an oxygen alkaline pulping cooking device which comprises a feeding device, a pre-cooking device, a cooking device and a spraying device, wherein the feeding device is connected with the first end of the pre-cooking device and is used for conveying the pulping raw material into the pre-cooking device for pre-cooking; the second end of the pre-cooking device is connected with the first end of the cooking device, and the pre-cooking device is used for conveying the pre-cooked pulping raw material into the cooking device for cooking; and the second end of the cooking device is connected with the spraying device, and the cooking device is used for conveying the cooked pulp into the spraying device for spraying. The oxygen alkaline pulping cooking device can be used for carrying out oxygen-alkaline cooking pulping on straw pulp and wood pulp, the prepared straw pulp contains more than 10% of silicon dioxide, the yield of a cooking work section reaches up to be more than 50%, and the whiteness reaches 50-60%, so that the device is easy to bleach, reduces the scaling phenomenon of a black liquor concentration evaporator pipeline, is beneficial to clarifying the white liquor in the subsequent causticization process, and improves the alkali recovery rate.

The invention discloses chlorine-free bleaching powder for textile materials, made from 15-30 parts of rare earth, 10-28 parts of hydrogen peroxide, 5-15 parts of sodium percarbonate, 5-10 parts of sodium percarbonate, 2-5 parts of sodium sulfate, 4-9 parts of primary alcohol ethoxylate, 1-7 parts of a sodium salt of maleic anhydride-acrylic acid copolymer, 2-7 parts of sodium hydroxyethyl sulfonate, 2-7 parts of a brightener, 5-12 parts of an activator, 0.5-3.5 parts of a catalyst, and 1.5-5.5 parts of a stabilizer. The chlorine-free bleaching agent for textile materials and a preparation method thereof are provided herein; the bleaching agent is friendly to equipment and personnel, and is suitable for bleaching in an acid environment; the bleaching steps are simple and quick, and a textile material bleached is better for dyeing.

The invention discloses grass series fiber pulping technology. It includes preprocessing, once and secondary steam boiling. Its advantages are that it can reduce environment pollution that the discharged black liquor can be reduced by 50% per ton; silicon content can be reduced by 50%; water can be saved by 50%; the formed slurry has light color, high brightness, low hardness, high strength, easy pulping and bleaching.

The invention discloses a fast identification method for plant dyed cotton fabric and chemical dyed cotton fabric through bleaching. The method comprises steps that the chlorite, the activator and thepenetrant are respectively added to the distilled water so that concentrations are 10-15% of the chlorite, 4-6% of the activator and 2-3% of the penetrant respectively to obtain the solution, mineralacid is then added to the solution, the pH is adjusted to 1-3, and a special reagent is prepared; the special reagent is measured and obtained, a pair of tweezers are utilized to completely immerse the fabric in the special reagent for 3-5 seconds, and then the fabric is quickly removed and placed on a white identification plate; the color change of the fabric on the white identification plate isobserved within 1-10 s after the fabric is taken out, if the fabric fades or turns white, the fabric is the plant dyed fabric; if the fabric has no color change, the fabric is the chemical dyed fabric. The method is advantaged in that operation is simple and convenient, identification is simple and easy, the consumption time is short, the result is accurate, universality is realized, and the identification time of the plant dyed fabric is shorter than 10s.