Hot reflux extraction and concentration unit

Scope of hot reflux extraction and concentration unit this standard specifies the classification, marking, requirements, test methods, inspection rules and marks, operation instructions, packaging, transportation and storage of hot reflux extraction and concentration unit This standard is applicable to the atmospheric pressure concentration unit of hot reflux extraction and vacuum concentration unit of hot reflux extraction (hereinafter referred to as concentration unit) with water or ethanol as solvent Z normative references clauses in the following documents become clauses of this standard by reference to this standard For dated references, all subsequent amendments (excluding Corrigendum) or revisions are not applicable to this standard However, parties to an agreement based on this standard are encouraged to study whether Zui new versions of these documents can be used For undated references, the new edition of Zui is applicable to this standard GB 150 steel pressure vessel GB 151 shell and tube heat exchanger GB / T 191 packaging, storage and transportation pictorial mark GB 3836.1 electrical equipment for explosive gas environment Part 1: General requirements GB 5226.1-2002 mechanical safety, mechanical and electrical equipment Part 1: General technical conditions GB / T 6060.4 surface roughness comparison sample block polished machined surface GB / T 6388 transportation, packaging, receiving and delivery mark GB / T 6388 9.69.1 general rules for use instructions of industrial products GB / T 10 Sichuan random sampling method using random number scatter GB / T 13 306 sign GB / T 16 769 measurement method of noise sound pressure level of metal cutting machine JB / t4711 pressure vessel coating and transportation packaging JB 47 30 nondestructive testing of pressure equipment JB / t4735 steel welded atmospheric pressure vessel pressure vessel Safety Technical Supervision Regulation (1999 edition) National Bureau of quality and technical supervision 3 terms and definitions hot gas reflux hot gas reflux is a recycling process in which the solvent vapor in the evaporator is condensed and then returned to the extraction tank 4 Classification and marking 4.1 structure JB / T 20044-2005 concentration unit is composed of extraction tank, heater, evaporator, condenser, condensation recovery tank, etc 4.2 the product classification and concentration unit is divided into thermal reflux extraction atmospheric pressure concentration unit and thermal reflux extraction vacuum concentration unit according to its working conditions The concentration unit is divided into explosion-proof type and non explosion-proof type according to the nature of the solvent used 4.3 see Table 1 and table 2O for the basic parameters of the concentration unit See Table 1 for the basic parameters of the atmospheric concentration unit See Table 1 for the basic parameters of the extraction tank jacket heating steam pressure, MPA {O3 heater heating steam pressure, MPA < 0.1 return circulation system working pressure, MPA working pressure in the system during atmospheric concentration, MPA atmospheric evaporation intensity, Kg / (M3 "H) 7250 heating steam consumption 1 evaporation Yan 1.1 cooling water consumption / evaporation 12.5 note 1: evaporation is measured with soft water as the medium Note 2: the water consumption is measured when the inlet water temperature is 20 ` C and the outlet water temperature is 70 ℃ Table 2 basic parameters of vacuum concentration unit project parameters jacket heating steam pressure of extraction tank MPa x 0.3 heating steam pressure of heater, MPA < 0.1 working pressure of return circulation system, MPA working pressure in the system during atmospheric concentration, min-0.06 evaporation intensity, kg / (a} "H)] 250 heating steam consumption / evaporation < 1.1 cooling water consumption / evaporation < 37 Note 1: evaporation is measured with soft water as the medium Note 2: the water consumption is measured when the inlet water temperature is 20t and the outlet water temperature is 35 ℃ JB / T 20044-2005 4.4 product mark 4.4.1 model preparation: RTN port one port specification code: nominal volume of extraction tank, resistant characteristic code: non explosion proof type does not indicate, explosion-proof type uses B for type code: normal pressure concentration does not indicate, vacuum concentration uses 7 Function code: hot reflux extraction concentration equipment 4.4.2 mark Er example: RT NZ I B3 type: refers to the explosion-proof hot reflux extraction vacuum concentration unit with the extraction tank volume of 3 Peng 5 requirements 5.1 materials and safety accessories 5.1, all parts in direct contact with materials shall be made of materials that are corrosion-resistant, non-toxic, do not react with materials and do not adsorb materials 5.1.2 the seal shall be made of non-toxic materials with temperature resistance above 120 ` C, chemical stability and non adsorption materials 5.1.3 safety accessories of concentration unit a) the dial scale limit of pressure gauge shall be 1.5-3.0 times of Zui high working pressure, its accuracy shall not be less than level 2.5, and the dial diameter shall not be less than l0 0m Mo b) the safety valve and pressure reducing valve shall comply with the relevant provisions of supervision regulation on safety technology of pressure vessel (1999 version) 6.2 manufacturing quality 5.2 The exposed metal surface of the concentration unit shall be flat and smooth without burr, edge angle, damage and obvious depression 5.2.2 the surface in contact with materials in the concentration unit shall be flat, smooth and free of dead angle, easy to clean and disinfect The surface roughness Ra value shall not be greater than 0.8f UNO 5.2.3 the manufacturing of the main pressure components of the extraction tank in the concentration unit shall comply with the relevant provisions of GB 150 and the supervision code for safety technology of pressure vessels (1999 version) 5.2.4 the weld surface of extraction tank of concentration unit shall be free of cracks, air holes, craters, splashes, undercuts and other appearance defects 5.2.5 the heater shall be manufactured in accordance with the relevant provisions of GB 151 5.2.6 the evaporator shall be manufactured in accordance with the relevant provisions of JB / T 4735 5.3 electrical safety 5.3.1 the electrical system shall be equipped with short-circuit and overload protection devices, as well as safety grounding devices and signs 5.3.2 the continuity of protective grounding circuit of electrical system shall comply with the provisions of 8.2.3 in GB 5226.1-2002 5.3.3 the insulation resistance between the power circuit conductor of the electrical system and the protective grounding circuit shall not be less than 1mno 5.3.4 the power circuit conductor of the electrical system and the protective grounding circuit shall be able to withstand the withstand voltage test of SOHz, l000v alternating current for is without breakdown or flashover 5.3.5 the electrical safety performance and requirements of explosion-proof concentration unit shall comply with the relevant provisions of GB 3836.1 5.4 performance JB / T 20044 - see 5.4.1 the feeding door of concentration unit shall be opened flexibly The lock mechanism of slag discharging door shall be easy to operate, the hook can be locked in place when closing, and the seal shall be reliable After opening, the slag discharging shall be smooth without bridging 5.4.2 the pneumatic, vacuum and water-cooling pipeline system in the concentration unit shall be unblocked, and the connection parts shall be sealed and reliable without leakage 5.4.3 the return circulation system of the concentration unit shall be sealed and reliable without leakage 5.4.4 the extraction tank shall heat the water from 25 ℃ to 10090, and the required time shall not exceed 30mino 5.4.5 evaporation intensity, heating steam consumption and the ratio of cooling water consumption to evaporation shall meet the requirements of Table 1 or table 2 5.4.6 the operation of concentration unit shall be stable without abnormal sound, and the noise sound pressure level of load operation shall not be greater than 75db (a) O 6 test method 6.1 inspection of materials and safety accessories 6.1.1 inspection of quality certificate and material certificate of materials in contact with materials If there is no such certificate, it shall be inspected according to the standards of relevant materials 6.1.2 check the seal material certificate 6.1.3 check the inspection certificate issued by the national quality supervision and inspection department of pressure gauge, safety valve and other safety accessories 6.2 manufacturing quality inspection 6.2.1 visual inspection for the appearance of concentration unit 6.2.2 the roughness of the contact surface with the material shall be checked by the comparison sample block specified in GB / T 6060.4 6.2.3 the extraction tank shall be subject to hydrostatic test in accordance with GB 150 6.2.4 NDT shall be carried out for the welded joints of extraction tank and pressure parts according to the provisions of JB 4730 6.2.5 the heater shall be tested according to the relevant provisions of GB 151 6.2.6 the evaporator shall be tested according to relevant provisions of JB / T 4735 6.3 electrical safety test 6.3.1 short circuit, overload protection device and grounding device of electrical system shall be visually inspected 6.3.2 the continuity of protective grounding circuit of electrical system shall be tested according to 19.2 in GB 5226.1-2002 6.3.3 the insulation resistance between power circuit conductor and protective grounding circuit shall be tested according to 19.3 in GB 5226.1-2002 6.3.4 the withstand voltage test between power circuit conductor and protective grounding circuit shall be conducted in accordance with the provisions of 19.4 in GB 5226.1-2002 6.3.5 the electrical safety test of explosion-proof enrichment unit shall be carried out in accordance with the relevant provisions of GB 3836.1 6.4 performance test 6.4.1 sensory inspection for opening, closing and locking performance of feeding door and slag discharge door 6.4.2 sealing performance test of air control system: the compressed air required for normal operation shall be introduced from the air inlet, and the connection part shall be brushed with soapy water for test, and there shall be no bubble 6.4.3 sealing performance test of cooling system: the cooling water with a pressure of not less than 0.15Mpa from the water inlet is naturally discharged from the water outlet, and whether there is leakage is checked visually 6.4.4 vacuum system performance test: after closing the door and valve of the thickener, start the vacuum pump and test the vacuum performance with the vacuum meter on the equipment 6.4.5 the return circulation system shall be filled with water with a water pressure of 0.15npe, and the leakage shall be visually inspected 6.4 S add so% of the nominal volume of water into the extraction tank, adjust the water temperature to 259c, start heating, and use the clock to measure the time required to 100 ` C boiling JB / T 20 04 4 - 200 5 6.4.7 test and calculation of evaporation intensity, heating steam consumption and ratio of cooling water consumption to evaporation: after the concentration unit operates normally for 15 minutes, use rotameter or standard measuring cylinder, timing clock, etc to test the evaporation, heating steam consumption and cooling water consumption at the same time, and measure Tomin for three times each time Calculate the evaporation intensity according to formula (1) and take the arithmetic mean value (1) In the bow formula: p-arithmetic mean value of evaporation intensity, k-year-old (Peng · h); v-nominal volume of extraction tank, m3; t-test time, h; q-evaporation capacity, kg Calculate the ratio of heating steam consumption and cooling water consumption to evaporation according to formula (2), and take the arithmetic mean value W (A.B) double passenger Q (a, b) I Q (2) formula: Bell - arithmetic mean value of ratio of heating steam consumption to evaporation; WB - arithmetic mean value of ratio of cooling water consumption to evaporation; QAI - heating steam consumption, kg; QB - cooling water consumption, kg; Qi - evaporation, kg 6.4.8 the noise sound pressure level during load operation shall be measured according to the provisions of GB / T 16769 7 Inspection rule 7.1 inspection classification product inspection includes delivery inspection and type inspection 7.2 delivery inspection 7.2.1 each concentration unit shall be inspected and qualified by the quality inspection department of the manufacturer, inspected and qualified by the local pressure vessel safety supervision department, and can be delivered with the product certificate 7.2.2 the delivery inspection shall be carried out according to the items specified in Table 3 Table 3 inspection items 5.1.3, 5.2.1, 5.2.2, 5.4.1, 5.4.25, 2.3-5.2.6, 5.3, 5.4.3, 5.4.47.2.3 in the factory inspection, if any unqualified item is found, it is allowed to return it for repair and recheck If the recheck is still unqualified, it is determined that the product is unqualified 7.3 type gun inspection