Профессионально спроектированная высокая доходность венчурного капитала

VC Project Introduction

Four essential phases are involved in vitamin C production: fermentation, extraction, conversion, and refining.

1. Fermentation section

The primary duty is to connect the purified strain ramp to the empty sterile ramp in the strain room and culture to the endpoint. Then, they were injected into a triangle-shaped flask containing a sterile medium and grown till maturity. Throughout, Kirschner flask medium was employed for culture. The seed liquid was then prepared in a Kirschner flask and added to the sterile medium in the tiny fermentation tank. After being correctly grown, the hygienic was canned, kept cold, and its sterility was verified. The seed was qualified and then subjected to fermentation.

A four-stage expansion culture is used before fermentation begins. The seed solution expands during the first, second, and third stages. Sorbic sugar is created via four sets of fermentation. Links to the first-level sterile medium for culture to the endpoint, the second-level sterile medium, the third-level sterile medium for culture to the endpoint, and links to fermentation and the fourth-level sterile medium were made. Once the initial stage of fermentation in the tank has been completed, control the temperature, tank pressure, and sterile airflow while the fermentation happens, and make sugar.

The second stage of fermentation is a four-stage expansion culture. The seed solution expands during the first, second, and third stages. To create sodium cologne acid, fermentation takes place throughout four phases. The seed solution was initially linked to the first level of sterile medium for culture to the endpoint, followed by the second level, third level, and fourth level of sterile medium for culture to the endpoint and fermentation. During fermentation, the feed liquid's pH was modified to be slightly acidic, and the temperature, tank pressure, and sterile air flow were all regulated. The mixture was then prepared for discharge till the fermentation reached its conclusion.

2. Extraction section

The circulating tank receives the fermenting liquid via an oscillating screen after it has been added to the refinery feeding tank. Start the membrane filtration system for filtering and then discharge the dialysate into the clear liquid tank. The produced concentration is treated for environmental protection when kept below 10mg/ml. The dialysate enters the crystallizer to cool and crystallize, following multiple stages of engagement and desalination using resin. To obtain wet gluonic acid, maintain the crystallization temperature at 5.0 and use a centrifuge to separate the solid from the liquid. The dissolved mother liquid is concentrated twice, chilled, and crystallized at 5 to 10 degrees Celsius. The conversion section is where moist cologonic acid that has been recovered and separated enters.

3. Conversion section

In the ester conversion tank, quantitatively determined wet or recovered gluonic acid is added after the concentrated H2SO4 is slowly poured in a while being stirred in the open. After that, the reaction is heated to completion. The control feed material for the conversion reaction has a moderately alkaline pH and is used after the feed material has cooled. After the response has reached its goal, the substance is cooled to below ten degrees Celsius using a cooling tank to prepare it for solid-liquid separation. After the sodium vitamin C dissolves, the mixture undergoes many concentrations, an ion exchange procedure to desalt and decolorize it, and then it enters the crystallization tank for cooling. Before usage, the methanol mother liquid is transported for distillation and purification. Centrifuging the crystalline liquid, cooled with cold brine to below 5.0°C, yielded crude vitamin C. The unprocessed vitamin C can be dissolved in pure water finely or coarsely.

The mother liquor of crude vitamin C is divided by concentration, crystallization, chilling, and separation to produce the first recovered vitamin C, which is then dissolved into the desalination device for usage. Alcohol precipitated and separated the solid sodium cologne acid after chilling and neutralizing the secondary mother liquor and before desalting. The third mother liquor that had been separated underwent desalting, decolorization, and dealcoholization in the first mother liquor concentration system.

4. Refinery section

Following the technical specifications, add water to boil up, dissolve crude vitamin C, and add carbon to neutralize the color. Before entering the tank of crystallization, it is filtered several times. To regulate the crystal size dispersion, use lead crystals and carefully control the cooling process. After feeding the crystallization tank, adjust the cooling rate to allow the material to cool to the crystallization point before adding the appropriate amount of crystal seed. After bringing the temperature down to 0°C below the discharge temperature, add the antifreeze solvent. Use a centrifuge to separate the liquid from the solid and drain the mother liquid's washing liquid. The moist vitamin C is dried using a dryer. Drying is done at less than 65 °C—3-hour drying time. After drying, the material is cooled and discharged. To protect the material during drying, the dryer uses pressure reduction. After drying, the material is put through screening and a gold inspection. Following a successful inspection, storage is followed by weighing and packaging.

After being desalted in the conversion step, the de-alcoholized mother liquor is processed. The separated crude methanol is corrected in the distillation column before being used in the refinery part.