2results about How to "Low ash content" patented technology

This invention provides an online pH adjustment system for rice slurry, aiming to solve the problems of long pH adjustment time, high reagent consumption, and untimely reaction termination in existing technologies. Specifically, it includes a reaction tank, a transfer pump, a pre-installed automatic regulating valve, a flow meter, a pH adjustment unit, a mixing unit, and a closed-loop control unit. After the rice slurry is adjusted to the acceptable pH level by the pH adjustment unit, it is output to the next stage via the closed-loop control unit. Unacceptable slurry is returned to the reaction tank via the closed-loop control unit. This invention significantly improves the speed and accuracy of pH adjustment through a two-stage pH adjustment system and automatic control technology. The system can complete the pH adjustment of the material within 15-20 seconds and the pH adjustment of the entire reaction tank within 10 minutes, ensuring timely termination of the enzymatic hydrolysis reaction.

This invention discloses a method for producing porous biomass carbon using Casuarina equisetifolia. The method involves reactively extruding Casuarina equisetifolia powder, ammonium polyphosphate, melamine, potassium acetate, urea, and water using a twin-screw extruder to obtain a rheological phase plasticizing precursor. This precursor is then refined through segmented curing and foaming, high-temperature reforming activation, hot water digestion, and ultrasonic acid washing to obtain porous biomass carbon. This invention utilizes a eutectic system to achieve low-temperature continuous processing of the precursor and inhibits equipment corrosion. A well-developed pore structure is constructed through a stepwise cross-linking foaming and mild activation strategy. The porous biomass carbon prepared by this invention has an ash content ≤1.12%, a carbon yield ≥35.7%, an iodine adsorption value ≥1278 mg / g, and a methylene blue adsorption value ≥175 mg / g. Furthermore, the process is continuous, with minimal equipment corrosion, making it suitable for industrial production.