5 results about "Bicarbonates sodium" patented technology

This invention belongs to the field of disinfectant technology, specifically relating to a TCCA instant effervescent tablet and its preparation method. A TCCA instant effervescent tablet, by weight percentage, is prepared from the following components: 35-50% trichloroisocyanuric acid, 8-15% urea, 10-18% anhydrous citric acid, 8-14% sodium bicarbonate, 3-8% modified starch disintegrant, 2-6% disodium hydrogen phosphate, 1-4% sodium dodecyl sulfate, 0.5-2% disodium ethylenediaminetetraacetate, 1-3% hydroxypropyl methylcellulose, 0.5-1.5% magnesium stearate, with talc to bring the total to 100%. This invention addresses the problems of existing disintegrants by preparing a modified starch disintegrant through grafting and cross-linking modifications. Experimental results show that effervescent tablets using the modified starch disintegrant of this invention have a disintegration time of only 65-112s in pure water, and the increase in disintegration time in hard water is small. After accelerated testing at 54℃ / 14d, the effective chlorine reduction rate is only 2.2-5.5%, and the increase in disintegration time is small. This indicates that the grafted and cross-linked dual-modified structure has good stability and can maintain excellent disintegration performance after heat storage.

The invention relates to a high-stability sodium dichloroisocyanurate effervescent tablet for veterinary use. The effervescent tablet is mainly prepared from the following raw materials in percentage by weight: 40 to 50 percent of microencapsulated sodium dichloroisocyanurate, 25 to 30 percent of hydrophobic sodium bicarbonate, 2.0 to 3.0 percent of hydroxypropyl methyl cellulose, 1.5 to 2.5 percent of povidone K30, 1.5 to 2.5 percent of polyethylene glycol, 0.5 to 1.0 percent of magnesium stearate and 15 to 25 percent of anhydrous lactose. According to the effervescent tablet, a double-layer microencapsulation isolation technology is adopted, direct contact of acid / alkali / active ingredients is blocked, the available chlorine degradation rate and dust pollution are greatly reduced through room-temperature storage, no organic solvent is left in the preparation process, and the product meets the requirements of green veterinary drugs.

An apparatus for electroproducing sodium carbonate or sodium bicarbonate, an apparatus for electroproducing sodium carbonate (Na2CO3) comprising: (A) an electrodialyzer unit stack to electrodialyze an aqueous sodium chloride (NaCl) solution into a sodium hydroxide (NaOH) solution and a hydrochloric acid (HCl) solution wherein the electrodialyzer unit stack operates at at least 2 production rates for a given period of time; (B) one or more carbonating means for partially or completely carbonating the NaOH solution with CO2 into a Na2CO3 solution; (C) one or more storage devices of the NaOH solution or the Na2CO3 solution; (D) crystallizer equipment, which is used for concentrating the Na2CO3 solution and producing Na2CO3 crystals and mother liquor; and wherein the storage means of the NaOH solution or the Na2CO3 solution has a volume sufficient to operate the crystallizer equipment at a constant production rate over said period of time.

The application discloses a pH value stabilizing device for producing sodium bicarbonate injection and relates to the technical field of related equipment for medicine production. The device comprises a water bucket, a refrigeration connecting pipe and a gas storage bucket. A group of water inlet pipes are fixedly connected to one side of the lower end of the water bucket, and a water pump is fixedly connected to the end of the water inlet pipes away from the water bucket. In the application, the refrigeration connecting pipe can be installed in the configuration and filling device. The refrigeration connecting pipe is provided with a water inlet connecting pipe, a water outlet connecting pipe and an air inlet connecting pipe. The water inlet connecting pipe and the water inlet pipe are detachably connected. The water outlet connecting pipe and the water outlet pipe are detachably connected. The air inlet connecting pipe and the air inlet pipe are detachably connected. The air outlet connecting pipe and the air outlet pipe are detachably connected. Through the detachable device, the pH value of the sodium bicarbonate injection can be stabilized, and the stabilizing device can be easily detached from the configuration and filling device, so that the configuration and filling device can be maintained and cleaned.

The present invention relates to a continuous process for the production of sodium bicarbonate crystals from a gaseous stream of carbon dioxide, comprising a step of absorbing carbon dioxide from the gaseous stream into an aqueous solution containing a sodium carbonate salt to produce an aqueous solution of sodium bicarbonate, followed by a step of crystallizing the sodium bicarbonate salt obtained in the first step. The present invention also relates to a system for the production of sodium bicarbonate crystals from a gaseous stream of carbon dioxide, comprising a control unit 10, an absorption unit 20 and a crystallization unit 30.