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49results about How to "Reduce sodium chloride content" patented technology

Enhanced high-temperature curing method with synergism of low salt and K salt substitution for producing dry-cured hams of acorn pigs

The invention relates to an enhanced high-temperature curing method with synergism of low salt and K salt substitution for producing dry-cured hams of acorn pigs and belongs to the technical field of deep processing of animal products. The method comprises the following steps: hybridizing local black pigs with Duroc, breeding pigs, taking legs of acorn pigs fed by taking acorns as main feeds as the raw materials, airing, fermenting and curing by using a modern enhanced high-temperature curing process for salting the legs with synergism of low salt and K salt which partially substitutes the salt, carrying out short-time enhanced high-temperature pretreatment after the salting is completed, carrying out anti-oxidization coating treatment on the surface of the hams in the middle period of fermenting and curing, and developing to obtain novel products of dry-cured hams of acorn pigs. The content of sodium chloride in the hams can be obviously reduced; meanwhile, the processing time of the hams is shortened from 10-12 months of the conventional dry-cured hams to 5-6 months through the enhanced high-temperature curing process; the flavor and the quality of the hams are obviously improved. Through the method, the production efficiency of the dry-cured hams is greatly improved; the flavor and the quality of the conventional hams are retained and developed; the characteristics of the process which breaks through the international process and the conventional process and is characterized by fermenting low-salt hams under high temperature are highlighted; the hams can more meet the requirements on health, nutrition and flavor of consumers in the modern society, and have broad market prospects.
Owner:NANJING AGRICULTURAL UNIVERSITY +1

Hydrolyzation post-processing technique during preparation of glyphosate through glycin method

The invention relates to a hydrolyzation post-processing technique during preparation of glyphosate through a glycin method, which includes the steps of implementing reduced pressure distillation andseparation to a hydrolyzation liquor under the temperature between 80 and 110 DEG C and the pressure equal to or less than 0.05MPa after the condensation reaction and hydrolysis reaction for preparingglyphosate through the glycin method are finished, depickling and then crystallizing to obtain the glyphosate products. The hydrolyzation post-processing technique during preparation of glyphosate through the glycin method recovers hydrochloric acid by reducing the pressure, which can lead the recovery rate of hydrochloric acid to be more than 4 percent; and hot water is added for crystallizing after the hydrochloric acid is removed, thus effectively improving the availability factor of a crystallization kettle; and meanwhile, as no caustic soda liquor is added during hydrolyzation, the totalamount of a mother liquor and the content of sodium chloride are reduced as well, the energy consumption for recovering triethylamine through rectifying the mother liquor is reduced, and the total yield of the finally obtained solid glyphosate reaches 73-75 percent.
Owner:SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD

Glyphosate mother liquor comprehensive treatment and resource recycling method

The invention discloses a glyphosate mother liquor comprehensive treatment and resource recycling method which comprises the following steps: adding a pH value regulator into acidic mother liquor M0,standing for layering, and separating the solution to obtain mother liquor M4 at the upper layer and mother liquor M5 at the lower layer; the mother liquor M4 and the mother liquor M5 are treated andapplied, triethylamine hydrochloride, triethylamine, chloride salt, methyltriethylammonium chloride, phosphorous acid or salt thereof, hydroxymethylphosphonic acid or salt thereof, glyphosate or saltthereof, glyphosate or salt thereof and glyphosate or salt thereof are recovered from the mother liquor M4 and the mother liquor M5, and are respectively and correspondingly converted into products with higher additional values for utilization. The glyphosate mother liquor comprehensive treatment and resource recycling method has the advantages that the emission is reduced from the source; the method reduces the total amount and treatment load of the glyphosate mother liquor, reduces environmental pollution, realizes reasonable recycling and appreciation of resources, improves economic benefits, is environment-friendly, outstanding in economic benefits and good in technical implementation effect, and is suitable for large-scale industrial application.
Owner:陈兴华

Preparation method of N-(phosphonomethyl) iminodiacetic acid

The invention provides a preparation method of N-(phosphonomethyl) iminodiacetic acid. The preparation method comprises the steps of enabling disodium iminodiacetate to react with hydrochloric acid to obtain a solution containing monosodium iminodiacetate and sodium chloride; concentrating the solution containing monosodium iminodiacetate and sodium chloride, heating and filtering to obtain a sodium chloride solid and filtrate; mixing the filtrate with hydrochloric acid and phosphorous acid, heating, then adding formaldehyde and reacting to obtain N-(phosphonomethyl) iminodiacetic acid. As monosodium iminodiacetate has relatively large solubility in water and the changes in solubility of sodium chloride along with the temperature are not obvious, sodium chloride obtained by acidification of disodium iminodiacetate by hydrochloric acid is firstly separated, so that the content of sodium chloride is reduced, the precipitation of sodium chloride in the subsequent reaction is avoided, and the reaction yield is improved; meanwhile, the viscosity of raw materials is reduced, so that the mixing of the raw materials becomes more uniform. Secondary, as sodium chloride in the system is reduced, wastewater produced by washing during separation of N-(phosphonomethyl) iminodiacetic acid is reduced. Experimental results show that the yield of N-(phosphonomethyl) iminodiacetic acid prepared by the method provided by the invention can be up to above 93%.
Owner:CHONGQING UNISPLENDOUR CHEM

Ice for food partial freezing fresh keeping

ActiveCN106665791AReduce meltingSolve the problem of using security and application stabilityMeat/fish preservation by freezing/coolingCold chainAdditive ingredient
The invention discloses ice for food partial freezing fresh keeping. The ice mainly comprises the following ingredients in percentage by mass: 0.5 to 1 percent of sodium chloride, 1.5 to 2.5 percent of propanediol, 0.5 to 1.5 percent of sodium polyacrylate and the balance water. In the preparation process, sodium polyacrylate is firstly dissolved by propanediol; then, the solution is mixed with sodium chloride and water to prepare a mixed solution; next, the mixed solution is made into ice. The fresh keeping ice point range is -3 to -1.5 DEG C, and is lower than the ice point temperature of 0 DEG C of conventional ice; the maintaining time is obviously superior to that of the partial freezing ice prepared from NaCl; the recipe ingredient is harmless to the human body health; the ice point temperature is reduced through combining the sodium chloride and the propanediol for the first time; the sodium polyacrylate is used for prolonging the ice thawing time. The ice provided by the invention solves the problems that in the cold chain logistics, the ice point temperature of the ordinary ice is high; the thawing time is short; the long-distance cold chain transportation is not facilitated. The ice temperature storage environment can be created for the food in the long-distance cold chain transportation process; the transportation process temperature stability is maintained.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Sodium sulphate preparation method and sodium sulphate foot structure of evaporator therefor

The invention discloses a sodium sulphate preparation method and a sodium sulphate foot structure of an evaporator for the sodium sulphate preparation method. The method comprises the following steps of: (1) sequentially evaporating sodium sulphate liquid at least by a five-effect evaporator, a four-effect evaporator and a triple-effect evaporator, then evaporating the concentrated solution in the triple-effect evaporator in a double-effect evaporator and a single-effect evaporator separately, wherein a sodium sulphate liquid inlet is arranged at the middle lower part of the sodium sulphate foot of each of the double-effect evaporator and the single-effect evaporator, then introducing low sodium chloride raw-material sodium sulphate liquid from the inlets so as to decrease the temperature of the concentrated solution at the discharge port of the sodium sulphate foot in the evaporator to 70-80DEG C, and decrease the content of sodium chloride to 140-180 g/L; and (2) pumping the concentrated solution of temperature 70-80DEG C and sodium chloride content 140-180 g/L obtained in the step (1) into a thickening apparatus for thickening, separating the liquid from solid, feeding the obtained solid into a drying apparatus for drying, and pumping the mother solution of the thickening and drying processes into the triple-effect evaporator for recycling.
Owner:江苏白玫化工有限公司

Preparation technology of solar salt

InactiveCN106185990ASimple processGood process parametersAlkali metal chloridesAtmospheric dustFiltration
The invention relates to a preparation technology of salt, in particular to a preparation technology of solar salt. The preparation technology of the solar salt comprises the specific steps of 1, making saturated brine from seawater, and transporting the saturated brine to a purifying pond through a pipeline for filtration and purification so as to filter off biological dead bodies, plant residual bodies, atmospheric dust fall and the like in the saturated brine; 2, adding the purified pure brine into a crystallization pond, controlling the depth of water in the crystallization pond to be 5-10cm, and during sun-curing, performing salt spinning and brine spinning with a rotary rake; 3, when the sodium-magnesium ratio of the brine is smaller than or equal to 2, stopping crystallization; 4, when the particles of the salt reach to 0.5-2.0mm and the evaporation amount of the salt reaches to 7mm, collecting the salt, when the salt needs to be collected, gathering the salt into heaps through cleaning tools, washing the salt with cleaning brine, then performing vacuum suction filtration and dehalogenation on the salt, and when the water content of the salt is smaller than or equal to 5.4%, stopping the operations of vacuum suction filtration and dehalogenation; and 5, preserving the obtained solar salt, packaging the preserved solar salt, and enabling the packaged solar salt to appear on the market.
Owner:DALIAN YANHUA GROUP

Preparation method of 6-chloro-2,4-dinitroaniline

The invention discloses a preparation method of 6-chloro-2, 4-dinitroaniline. The preparation method comprises the following steps: a, dispersing 2,4-dinitroaniline in hydrochloric acid and a catalyst, and carrying out pulping, wherein the mass fraction of the hydrochloric acid is 1-6 wt%; b, introducing chlorine gas into a pulping material obtained in the step a and carrying out a chlorination reaction; c, adding a sodium chlorate solution into a reaction solution obtained in the step b, and continuing the chlorination reaction, wherein the mass fraction of the sodium chlorate solution is 20%-40%; d, filtering a reaction liquid obtained in the step c, washing a filter cake by a washing device until the pH value of the filter cake is 6.0-7.0, returning mother liquor to the step a to be circularly and indiscriminately used as hydrochloric acid and the catalyst, and discharging the mother liquor into a wastewater treatment system until the concentration of sodium chloride in the mother liquor is saturated; and e, putting the filter cake obtained in the step d into an air flow drying machine for drying to obtain the 2,4-dinitro-6-chloroaniline. The method has the advantages of small overall water consumption and good cleaning effect.
Owner:浙江汇翔新材料科技股份有限公司

A kind of synthetic technique of 2,4-dinitro-6-chloroaniline

A synthetic technology for 2-chloro-4,6-dinitroaniline is disclosed. The technology comprises (1) dispersing 2,4-dinitroaniline in hydrochloric acid and a catalyst and stirring to form a slurry, wherein the mass fraction of hydrochloric acid is 1-8%; (2) introducing chlorine into the slurry obtained in the step (1) for chlorination reaction; (3) adding a sodium chlorate solution into the reaction solution in the step (2) and continuing performing chlorination reaction, wherein the mass fraction of the sodium chlorate solution is 20%-40%; and (4) filtering the reaction solution obtained in the step (3), washing the filter cake until the pH value is 6.0-7.0, returning the mother liquid to the step (1) as hydrochloric acid and the catalyst for cyclic utilization utile the sodium chloride in the mother liquid is saturated, and discharging the mother liquid into a wastewater processing system, wherein the molar ratio of 2,4-dinitroaniline, chlorine and sodium chlorate is 1:(0.2-0.8):(0.06-0.3). The technology is high in yield, the purity of the obtained product is high, cost is low, the cycling times of the mother liquid are more, the wastewater discharging amount is less, and the benifit of energy saving and emission reduction is substantial.
Owner:ZHEJIANG LONGSHENG GROUP +1

A kind of preparation method of 6-chloro-2,4-dinitroaniline

The invention discloses a preparation method of 6-chloro-2, 4-dinitroaniline. The preparation method comprises the following steps: a, dispersing 2,4-dinitroaniline in hydrochloric acid and a catalyst, and carrying out pulping, wherein the mass fraction of the hydrochloric acid is 1-6 wt%; b, introducing chlorine gas into a pulping material obtained in the step a and carrying out a chlorination reaction; c, adding a sodium chlorate solution into a reaction solution obtained in the step b, and continuing the chlorination reaction, wherein the mass fraction of the sodium chlorate solution is 20%-40%; d, filtering a reaction liquid obtained in the step c, washing a filter cake by a washing device until the pH value of the filter cake is 6.0-7.0, returning mother liquor to the step a to be circularly and indiscriminately used as hydrochloric acid and the catalyst, and discharging the mother liquor into a wastewater treatment system until the concentration of sodium chloride in the mother liquor is saturated; and e, putting the filter cake obtained in the step d into an air flow drying machine for drying to obtain the 2,4-dinitro-6-chloroaniline. The method has the advantages of small overall water consumption and good cleaning effect.
Owner:浙江汇翔新材料科技股份有限公司

A kind of ice for slightly freezing food

The invention discloses ice for food partial freezing fresh keeping. The ice mainly comprises the following ingredients in percentage by mass: 0.5 to 1 percent of sodium chloride, 1.5 to 2.5 percent of propanediol, 0.5 to 1.5 percent of sodium polyacrylate and the balance water. In the preparation process, sodium polyacrylate is firstly dissolved by propanediol; then, the solution is mixed with sodium chloride and water to prepare a mixed solution; next, the mixed solution is made into ice. The fresh keeping ice point range is -3 to -1.5 DEG C, and is lower than the ice point temperature of 0 DEG C of conventional ice; the maintaining time is obviously superior to that of the partial freezing ice prepared from NaCl; the recipe ingredient is harmless to the human body health; the ice point temperature is reduced through combining the sodium chloride and the propanediol for the first time; the sodium polyacrylate is used for prolonging the ice thawing time. The ice provided by the invention solves the problems that in the cold chain logistics, the ice point temperature of the ordinary ice is high; the thawing time is short; the long-distance cold chain transportation is not facilitated. The ice temperature storage environment can be created for the food in the long-distance cold chain transportation process; the transportation process temperature stability is maintained.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

A kind of recovery and utilization method of carnallite liquid in the production of potassium chloride

The invention discloses a recycling method for a carnallite post-throwing liquid in production of potassium chloride. The recycling method comprises the following steps: after separating carnallite which is settled by a carnalite settler by a centrifugal machine, washing the solid in a trough and conveying the solid to a speed control crystallizer; buffering the post-throwing liquid by virtue of a post-throwing liquid tank, conveying the post-throwing liquid to a post-throwing liquid settler and conveying a salt slurry which is settled by the post-throwing liquid settler to a high-temperature salt dosing step for production of industrial refined salt and magnesium sulfate monohydrate; and conveying an overflowing liquid in the upper layer by using the post-throwing liquid settler and the carnalite settler to an industrial bromine production step for production of industrial bromine. According to the method disclosed by the invention, the quality of a carnallite product in production of potassium chloride is improved, so that the content of potassium chloride in the carnallite product is reduced, the water consumption in a decomposing and washing step is reduced, the washing yield of potassium chloride is improved, the loss of potassium chloride in the washing process is avoided, and meanwhile, the potassium chloride product is improved, so that the targets of improving the quality and reducing the consumption are achieved.
Owner:天津长芦汉沽盐场有限责任公司
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