46results about How to "Reduce energy consumption for concentration" patented technology

The invention discloses a preparation process of glycine, which comprises amination, alkaline hydrolysis, ammonia discharge acidification, decolorizing, concentration, desalting, crystallization and recrystallization steps, wherein in the amination step, hydroxyacetonitrile and ammonia water are mixed in a tubular reactor, and a reaction is undergone at the temperature of 50-100 DEG C under the pressure of 0.5-2.0 MPa for 4-10 minutes; and in the alkaline hydrolysis step, 30-50 percent of sodium hydroxide solution is added into an alkaline hydrolysis reactor in advance, an amination liquid is collected from an amination liquid outlet, a reaction is undergone at the temperature of 60-90 DEG C under the pressure of between -0.01 MPa and -0.09 MPa, and ammonia in a system is recovered simultaneously. In the process, the tubular reactor is taken as an amination reactor, so that the reaction temperature and pressure are raised, the reaction time is shortened, and raw material decomposition, pyrolytic polymerization of aminoacetonitrile and the generation of byproducts are reduced; alkaline hydrolysis is performed during the collection of the amination liquid, the concentration of an alkaline liquor and the alkaline hydrolysis temperature are raised simultaneously, and ammonia in the system is recovered under reduced pressure, so that the alkaline hydrolysis reaction is more complete, the speed is higher, and the generation of colored impurities is reduced; and a mother liquor circular utilizing mode is established, so that the treatment amount of waste mother liquor is reduced, the product yield is increased, and the production cost is reduced.

The invention disclosed a way to extract water soluble ingredient in danshen root with gradient hyper sound fortified successive countercurrent. After putting the jar with danshen root and solvents inhyper sound (the frequency is 40kHz and the power is 320-600W) for t, transferring the solvent to another jar with danshen root; putting new solvent into the first jar; extracting the two jars of danshen root at the same time and transferring the solvent one by one; successively countercurrent extracting the active ingredient in danshen root. Compared with the traditional hyper sound extracting method, the countercurrent extracting method in the invention can keep the density differences between the solid and liquid phase in a high level and decrease the solvents dosage so as to save the energy to condense, increase the extracting efficiency and increase the yield.

The invention relates to a process for concentrating tobacco extract, belonging to the technical field of concentrating tobacco extract. The process is to micro-filter the tobacco water extract after primary purification, carry out forward osmosis concentration on the microfiltration permeate, and recover and recycle the diluted drawing solution formed by the forward osmosis concentration by electrodialysis or drying salt. The process of the invention has low operating pressure and high safety; the concentration temperature is low, the temperature rise is small during concentration, and heat exchange and temperature reduction are not required; the membrane pollution is light, the cleaning is simple and the cleaning frequency is low. At the same time, the process of the present invention has a high degree of concentration, and the concentration of the tobacco extract after concentration can reach 60%; in the process of concentrating the tobacco extract of reconstituted tobacco leaves in the papermaking method, it can completely replace evaporation and concentration; and the loss of materials, nicotine and volatile components in the process of concentration Small, low energy consumption, easy to popularize and apply.

The invention relates to the technical field of sludge dehydrating treatment, and especially relates to a method for concentrating horizontal-flow primary sedimentation tank sludge. sewage is sent to a horizontal-flow primary sedimentation tank, iron powder and powdered carbon are added in the horizontal-flow primary sedimentation tank, iron powder and powdered carbon form microelectrolysis in the horizontal-flow primary sedimentation tank, sewage is mixed with iron powder and powdered carbon and stirred for stirring processing, the iron powder is uniformly mixed with the powdered carbon in the horizontal-flow primary sedimentation tank, microbattery formed by the iron powder and powdered carbon can be distributed on the whole primary sedimentation tank, the organic matter in the sludge and microbe cell wall can be degraded or ruptured under effect of microelectrolysis, extruding processing of a gantry crane grab bucket is combined, so that color substance in sewage can be removed, water in the microbe cell wall in the sludge can be dissociated, combination water content in the sludge is reduced, sludge condensation processing difficulty is reduced, sludge dehydration rate is increased, press filtration load and difficulty of a filter press are reduced, and sludge processing cost is reduced.

The invention discloses a preparation method of a traditional Chinese medicine composition for treating infection of the upper respiratory tract. In the invention, a diaphragm press filtration cycle extraction and separation integrative technology is adopted to replace a boiling method to be utilized for extraction of medicinal material active ingredients. Therefore, the preparation method simplifies a process flow, shortens a production period, reduces energy consumption, is beneficial for environmental protection and waste dreg utilization, and improves greatly a recovery rate of active ingredients.

The invention discloses a preparation method of an anti-diarrheal medicinal composition. According to the preparation method disclosed by the invention, effective components in medicinal materials in a prescription are extracted by adopting a diaphragm filter press circulation, extraction and separation integrated technology instead of an ultrasonic treatment method or a decocting method, thus a process flow can be simplified, the production period is greatly shortened, the energy consumption is reduced, environmental protection and utilization of waste residue are facilitated, and the recovery rate of the effective components can be greatly improved.

The invention relates to a preparation method of D-lysine hydrochloride. The method comprises the following steps of: by taking DL-lysine as a raw material, after purification, reacting at 30-70 DEG C with L-tartaric acid to generate diastereomer salt; then, performing inorganic calcium salt with diastereomer salt to generate a calcium tartrate precipitate, while maintaining D-lysine in a liquid; adjusting pH, decoloring, concentrating and crystallizing the D-lysine liquid through hydrochloric acid to obtain D-lysine hydrochloride crude crystalline; and purifying the D-lysine hydrochloride crude crystalline to obtain the D-lysine hydrochloride. The content of DL-lysine in the D-lysine hydrochloride is below 0.5%. According to the method provided by the invention, a simple neutralization precipitation method replaces a complex ion-exchange resin method to the benefit of simplifying the production method and stabilizing the product quality. Meanwhile, the method further has the advantages of no special devices and reduction of environmental pollution, and is easy to popularize and apply industrially.

The invention discloses a preparation technology of niacinamide. The preparation technology comprises the following steps of building of gene engineering bacteria, fermenting culture of engineering bacteria, and performing catalytic reaction, wherein the engineering bacteria comprise escherichia coli host cells and a nitrile hydratase gene of which the base sequence is shown in SEQ ID NO.1 or SEQID NO.2; in the catalyzing process, pure water is used as a reaction medium to prepare a cell suspension liquid; 3-cyanopyridine is added into the cell suspension liquid by batches, and the concentration of the 3-cyanopyridine in the reaction system is controlled to be 90g / L or less, so as to obtain the niacinamide. The preparation technology has the advantages that the gene engineering bacteria containing the recombinant nitrile hydratase with high enzyme activity is used for fermenting culture, the pure water is used as the reaction medium, and the 3-cyanopyridine is added into the cell suspension liquid in a batched base matter adding way, so as to perform the hydration reaction at high efficiency, thereby obtaining the niacinamide product; the conversion rate of the hydration reactionis more than 99.9%, the quality of the obtained product is high, and the impurities and byproducts are not produced.