T/SDAHA 007-2024 The Evaluation Specification for Green Extraction Production Technology of Veterinary Yinhuang Decoction with Two Balsam Mixtures

Scope

Main Technical Content: 1. Technical Requirements 1.1 Extraction Equipment This section specifies the technical requirements for extraction equipment used in the green extraction of Silver Yellow Er Chen Mixture for Veterinary Use. Based on domestic and international information and the actual extraction equipment used by members of the standardization group, eight technical requirements for extraction equipment are defined. These are fundamental principles that form the basis for achieving green extraction. 1.1.1 The extraction equipment consists of an extraction tank, a feeding system, a filtration system, a cooling and temperature control system, an automatic control system, and a sludge disposal system. 1.1.2 The materials of the extraction tank and feeding pipelines must be stainless steel, meeting the requirements of GB/T 24511 and GB/T 4237. 1.1.3 The welded seams of the extraction tank and feeding pipelines must be smooth and complete, without obvious undercutting or indentations. The inner wall of the tank should be polished, with a surface roughness (Ra) not exceeding 0.8 μm. 1.1.4 The feeding system should have an online flow addition function, enabling real-time control of the flow rate of various liquid raw materials and auxiliary materials. The piping layout of the feeding system should be reasonable, and the welded joints should be smooth. 1.1.5 The filtration system should use a continuous filtration device. 1.1.6 The cooling and temperature control system should adopt high-efficiency heat exchange equipment with a heat exchange coefficient of no less than 4,000, and the cooling system should be controlled by frequency conversion and constant pressure. The cooling tower fans should be automatically controlled. 1.1.7 The automatic control system should primarily enable full automation of the equipment and process flow, with manual operation as a supplementary function. 1.1.8 The sludge disposal system should have a sludge extrusi

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