分析浸出车间降低溶剂损耗的方法.doc

分析浸出车间降低溶剂损耗的方法 分析浸出车间降低溶剂损耗的方法在浸出出产中,溶剂耗费是衡量公司管理水平及技术、设备完善程度的重要经济技术指标。对一个油厂来说,通过质料、设备、技术流程后,溶剂损耗不外乎2种状况:一是油中、粕中、废水和自在气体中溶剂收回疑问;二是因为设备加工质量较差、密闭功能欠好以及出产操作不妥。这既影响油、粕质量和加工成本,更重要的是要挟大家的生命财产安全和公司出产的安全。因而,下降溶耗是关系到油厂经济效益和广大职工切身利益的重要疑问,有必要导致高度重视。In the leaching production, solvent consumption is an important economic and technical index to measure the companys management level and technical, equipment is perfect degree. For a plant, through the material, equipment, technological process, solvent loss is nothing more than 2 kinds of situation : one is the oil, meal, wastewater and free gas in solvent to recover the question; two is because the equipment processing poor quality, bad sealing function and the production operation. This not only affects the oil, meal quality and processing costs, more important is to everyones life and property safety and production safety. Thus, reduced solvent consumption is an important question related to the oil refinery economic benefits and the immediate interests of the workers, it is necessary to attach great importance to.1下降毛油中的溶剂含量The 1 decline in the solvent content in crude oil1.1进步混合油浓度,把握好溶剂比1.1 progress of mixed oil concentration, a good grasp of the solvent ratio要合理挑选恰当的溶剂比,溶剂比大,对下降粕中的残油有必定效果,但所收到的混合油浓度太低,会给收回体系添加负荷,易形成毛油中含溶。通常以质料含油为根底,混合油浓度在此根底上添加5%10%。在确保粕中残油及混合油浓度进步的状况下,实践出产中溶剂用量通常为0.61(喷淋式浸出)。喷淋方法选用溶剂或混合油与料胚逆流的方法,即刚进浸出器的物料用较低浓度的混合油喷淋,这样能得到较浓的混合油。油厂常用的平转式浸出器浸出时溶剂比为0.81.11,也选用逆流的方法。Should be reasonable to select appropriate solvent ratio, solvent ratio, have certain effect on the decrease of residual oil in meal, mixed oil concentration but received too low, will add the load to recover the system, easy to form the crude oil containing dissolved. Usually in oil based material, to add the 5%10% mixed oil concentration on the basis of. To ensure that the meal residue oil and mixed oil concentration progress situation, the amount of solvent in the production practice is 0.6 1 ( spraying leaching ). Methods spraying method selection of solvent or mixed oil and the blank countercurrent, which just entered the leaching material mixed with oil spraying with low concentration, it can be mixed oil thick. Commonly used light oil rotary extractor leaching solvent ratio 0.81.1 1, also use countercurrent method.1.2把握好蒸腾中的首要蒸腾要素1.2 a good grasp of the primary elements of transpiration transpiration常压的蒸腾温度,1#蒸腾器在7580 ,直接蒸汽压力0.20.3 MPa;2#蒸腾器在95115 ,直接蒸汽压力0.30.4 MPa;汽提塔在125 左右,直接蒸汽压力0.4 MPa,直接蒸汽压力0.05 MPa。Transpiration temperature normal pressure, 1# transpiration in 7580, direct steam pressure 0.20.3 MPa; 2# transpiration in 95115, direct steam pressure 0.30.4 MPa; stripper at about 125 , direct steam pressure 0.4 MPa, direct steam pressure of 0.05 MPa.直接蒸汽含水多和用量大,会形成汽提塔液泛,毛油中的溶剂含量超支;可加汽水分离器或许把直接蒸汽加热成过热直接蒸汽进步蒸汽质量,削减汽提塔液泛。蒸腾量必定要均匀,不行忽大忽小,否则会形成1#、2#蒸腾器液泛和汽提塔脱溶不洁净,致使毛油残溶不稳定,乃至超支,直接蒸汽的用量是混合油量的0.31.4倍。混合油的浓度要定时测定,以不断改进混合油的浓度。混合油在蒸腾时液面高度(指衡位缸操控)以在蒸腾器长管的1/4高度处为宜。Direct steam water content and content, will form a stripper flooding, overruns the solvent content in crude oil; additive separator may have direct steam heating steam into superheated steam quality progress directly, cut the stripper flooding. Transpiration must be uniform, no flickering, otherwise it will form 1#, 2# transpiration is flooding and stripper exsolution unclean, resulting in crude oil residual solvent is not stable, and even overruns, direct steam consumption is 0.31.4 times of the mixed oil quantity. The concentration of mixed oil from time to time determination, with continuous improvement of mixed oil concentration. Mixed oil in transpiration level ( refers to the balance position cylinder control ) to 1/4 height in the transpiration is long tube is appropriate.2下降粕中的溶剂含量The 2 decline in the solvent content in meal(1)料层越高,越易产生料胚(尤其是细粒状的)成团或结块表象,使溶剂浸透阻力增大,形成溶剂在过了滴干段后,还没有复合浸透,以及湿粕含溶增大,添加蒸烘担负。要坚决根绝跑生表象,避免豆粕中的溶剂含量严峻超支。( 1 ) the bed higher, more easy to produce blank ( especially the fine-grain ) into a group or caking representation, the solvent penetration resistance increases, the formation of solvent in the dryer section, no composite penetration, and the solvent content in wet meal increases, add steamed shoulder. We must resolutely put an end to run student representation, avoid solvent content in soybean meal serious overspend.(2)在把握好溶剂喷淋量的一起,适宜把握好滴干时刻,湿粕含溶量在15%30%时,滴干时刻通常把握在1525 min。( 2 ) in a good grasp of the solvent spray volume, suitable for a good grasp of dry wet meal time, solvent content in 15%30%, drain time usually grasp in 1525 min.(3)入浸料水分操控因选用的浸出器不一样也略有不一样。平转型浸出器入浸水分8%9%,拖链型浸出器入浸水分9.5%9.5%,环形浸出器入浸水分10%12%。一起,常常查看新鲜溶剂能否带水,假若新鲜溶剂带水,很多溶剂随湿粕带到蒸脱机中,会形成蒸脱机负荷增大,一起也会形成豆粕结块,致使粕中溶剂严峻超支。( 3 ) the leaching material moisture control for leaching device chosen different also slightly different. Flat transition leaching into the soggy 8%9%, drag chain type leaching into the soggy 9.5%9.5%, ring macerator in leaching water 10%12%. Together, often see the fresh solvent can take water, if fresh solvent with water, a lot of solvent with the wet meal to desolventizer-toaster, will form a desolventizer-toaster load increases, together will be the formation of soybean meal agglomeration, resulting in serious overspend solvent meal.(4)粕脱溶量是在蒸烘机中进行的,要把握好蒸烘机的直接蒸汽和直接蒸汽的压力、蒸烘温度及料层高度,直接蒸汽压力不能太高,太高易形成溶剂在各轴封处外溢,严峻时溶剂渗漏,故通常操控在0.02 MPa左右。蒸烘温度操控在105110 。操作中要注意底层物料的高度,使料层高出1/3处,这样可削减溶剂气体的倒流。( 4 ) desolventizing is carried out in the steaming machine, to grasp the direct steam drying machine and direct steam pressure, steam temperature and bed height, direct steam pressure ca