31results about How to "Process Design Science" patented technology

The invention discloses a recovery method and device for a formic acid solvent during metronidazole production, which solves the problems that in the prior art, the cost of waste water recovery is large, the environment is polluted due to the direct emission of the waste water, and the like, and is characterized in that the recovery device formed by an evaporator (1), a storage kettle (7), a water absorption tower (8), filling materials (9 and 19), a high position feeding tank(10), a condenser (12), a storage tank (16), a perforated pipe (17), a screw (18) and the like performs recovery treatment on industrial waste water; the particular technological processes are as follows: the hydroxylation solution is evaporated through adopting the evaporator so as to obtain dilute formic acid vapor with the mass concentration of 30-70%; the formic acid vapor firstly passes through the cold material filling layer at the upper part of the evaporator to remove entrainment substances, such as metronidazole, of the formic acid vapor; part of water in the formic acid vapor is removed through the water absorption tower of the material filling layer with sticky polyphosphoric acid and high concentration phosphoric acid both flowing downwards; water in the formic acid vapor is further removed through a pipeline with phosphorus pentoxide; the concentrated formic acid vapor is condensed into high concentration formic acid liquid. The method and the device can be widely applied to a production enterprise for recycling a great deal of produced dilute formic acid waste water in chemical engineering production enterprises.

The invention discloses a feed oil adding device. The feed oil adding device comprises an oil pump, an oil storage tank, a thick oil drain pipe, a thin oil drain pipe, a first solenoid valve, a second solenoid valve, a weighing hopper, a buffer head, an oiling pump, a mixer, a timeout controller, a weighing sensor, a third solenoid valve, a pressure sensor and and an external control center; an oil inlet of the oil storage tank is connected with the oil pump through a pipeline, the oil storage tank is communicated with the weighing hopper through the thick oil drain pipe and the thin oil drain pipe, and the thick oil drain pipe and the thin oil drain pipe are provided with the first solenoid valve and the second solenoid valve respectively. The feed oil adding device is scientific and reasonable in structure, safe and reliable in operation, good in automatic control and good in practicability.

The invention discloses a yacon bifidobacteria rabbit sausage and a preparation method thereof. The yacon bifidobacteria rabbit sausage is prepared by salting and baking the following raw materials: rabbit meat, pork lean, fat pork, yacon, edible salt, white granulated sugar, monosodium glutamate, cooking wine, phosphate, D-sodium erythorbate, spices and seasonings. The preparation method comprises the following steps of: mincing the pork lean and the rabbit meat, salting the pork lean and the rabbit meat with the edible salt, the phosphate, the D-sodium erythorbate and sodium nitrite; adding the white granulated sugar, the monosodium glutamate, the cooking wine, the spices and seasonings, the fat pork and the yacon into the salted pork lean and the rabbit meat to be uniformly stirred to obtain a salted raw material; casing the salted raw material to obtain a prefabricated sausage; and baking, sealing, packaging and sterilizing the prefabricated sausage to obtain the sausage. The yacon bifidobacteria rabbit sausage is not only unique in flavor, fresh and tender to taste, crispy and tasty, not greasy after being eaten for a long time, rich in color, easy to preserve and convenient to carry and eat. The preparation method is short in flow, easy to operate and capable of realizing the industrialized production.

An oxidation-esterification-grafting ternary composite modified starch and its preparation method and application belong to the technical field of starch modification. The product of the present invention is prepared by applying a preparation method of simultaneously oxidizing, esterifying, and grafting modification of starch, so that it has the characteristics of oxidation, esterification, and grafting modified starch at the same time. The products are used as coating agents and sizing agents in the paper industry. The advantage of the present invention is that the three modification methods of oxidation, esterification and grafting are organically combined with almost no additional equipment, and are completed in one step in the oxidized starch production process and equipment. The process design is scientific and practical. The product performance is better than the modified starch varieties currently widely used in the paper industry, and it is easy to promote and apply.

The invention provides a continuous production method of 2-acrylamido-2-methylpropanesulfonic acid, which comprises continuous mixing of acrylonitrile and sulfur trioxide, and the mixed liquid flows into the first-stage reactor and simultaneously passes into the The isobutene in the primary reactor is subjected to the primary reaction, and the reaction liquid of the primary reactor enters the secondary reactor to carry out the secondary reaction with the isobutylene and sulfur trioxide which are simultaneously passed into the secondary reactor, and then the secondary reaction The reaction liquid in the device is subjected to solid-liquid separation, and the obtained solid is dried to obtain 2-acrylamido-2-methylpropanesulfonic acid product. The use of sulfur trioxide as a sulfonating agent can effectively reduce the occurrence of side reactions, and the polymer obtained by polymerizing the obtained 2-acrylamido-2-methylpropanesulfonic acid as a monomer has a relatively high molecular weight. In addition, the continuous synthesis method can effectively reduce the adverse impact on the stability of product quality that may occur during the operation process, thereby further improving the yield and quality of the product.

The invention relates to a method for manufacturing vacuum glass in a vacuum heating furnace by using a temperature and pressure control method. Firstly sides are sealed by heating under normal pressure and controlled temperature of 380-500 DEG C, requirements are met by vacuum pumping after side sealing powder is cooled and solidified, bleeder hole sealing is carried out on high temperature inorganic glass powder on a 420-900 DEG C melting bleeder hole, sealing is all continuously completed in the same vacuum heating furnace independently, so that the whole process design is scientific. The method adopts side sealing under the normal pressure and rising temperature before the vacuum heating furnace is pumped to be vacuum, vacuum pumping is carried out at the temperature lower than the side sealing temperature after the side sealing powder to be carried out side sealing is cooled and solidified after the sides are sealed, after vacuum degree meets requirements, the heat resisting inorganic sealing powder is partially heated to more than 400 DEG C to melt, and the bleeder hole is sealed. The method can effectively guarantee edge sealing quality of the vacuum glass and the vacuum degree of the vacuum glass, avoids air leakage and moisture problems of the vacuum glass, and effectively improves quality level of the vacuum glass.

The invention discloses low-protein daily ration for a growing pig under a net energy system and an application thereof, and belongs to the field of feed processing. The method comprises the steps of: taking the growing pig with the weight being 20-50kg as a research object, utilizing corn-bean pulp daily ration, reducing the protein content of the daily ration by 2% on the basis of the standard recommended by the National Research Council, simultaneously supplying lysine, methionine, threonine and tryptophan; adding mannan oligosaccharide, multivitamins, complex phosphoesterasum, probiotics and the like to form the low-protein daily ration for the growing pig under the net energy system; crushing, mixing, pelletizing then dosing, and packaging the pelletized feed and a probiotic component in a mixing manner to obtain the product disclosed by the invention. The animal feed utilization rate can be improved; the use quantity of antibiotic medicines in the feeding of animals is effectively reduced; the immunity of fed animals is improved; the security of animal meat products is improved; and the raise efficiency is also improved. The low-protein daily ration is scientific in process design, high in production efficiency, low in cost, and suitable for multi-variety and small-scale production.

The invention discloses a remote-sensing image mapping process. The process comprises the following steps: firstly, acquiring data sources; secondly, carrying out control survey on field pictures; thirdly, carrying out interior work aerial triangulation; fourthly, acquiring DEM data, and editing DEM data sets; fifthly, manufacturing a DOM (digital orthophoto map); sixthly, carrying out field electronic plotting, namely carrying out field plotting by an electronic plotting system so as to obtain a two-dimensional electronic plotting map, and moreover, carrying out on-site supplementary survey on surface features which need field supplementary survey in a measured area; seventhly, carrying out three-dimensional treatment on electronic plotted maps, namely adding the DEM data in the two-dimensional electronic plotting map according to the DEM data sets, and adding the on-site supplementary survey data so as to obtain a three-dimensional electronic plotting map; eighthly, amending data; ninthly, manufacturing a DLG (digital line graphic); and tenthly, storing data into a base as well as outputting 3D products. The method provided by the invention is simple in step, reasonable in design and convenient to implement, has a good using effect, and can simply, conveniently and rapidly complete the mapping process of remote sensing images.

The invention provides a paddy rice producing production technology for removing pesticide residue, and relates to the technical field of the processing and the producing of food, wherein the production technology comprises the following steps of: cleaning paddy, separating hull grains from hulled materials, removing the pesticide residue by means of coarseness humidifying, milling rice, removing the pesticide residue in a polishing way, and removing the pesticide residue by ultrasonic wave. The paddy rice producing production technology for removing the pesticide residue provided by the invention combines with the production of paddy rice producing, mainly aims at solving the problem that the paddy contains the pesticide residue, is scientific in technological process design, reasonable in technical method, and low in production cost, effectively and reliably removes the pesticide residue, can subsidiarily kill the toadstool in the paddy, can produce the paddy clearly, guarantees the quality safety of paddy-processed products, is free from secondary pollution of rice products in the process of processing and producing, can not change the original quality, nutrition and special flavor of the paddy, is particularly suitable for preparing the products which are higher in nutrition value and economic value such as germ-remaining rice, the clean rice and the like besides the common rice, and is further good for reducing the pesticide residue of byproducts prepared by comprehensive utilization.

The invention discloses an addition method of feed fat, and belongs to the technical field of processing of feeds. The addition method comprises the following steps of (1) setting parameters: according to actual demands, setting technological parameters, such as a temperature threshold, a liquid level threshold, fat pre-weighting weight, fat to-be-weigh weight, a weighing time threshold and a pressure threshold, in an external control center; (2) charging fat: conveying the fat to an oil storage tank, and setting and controlling opening and closing of a thick oil drain pipe and a thin oil drain pipe so as to realize the charging manner that the firstly, the fat is rapidly charged, and then the fat is slowly charged; (3) charging oil for a mixing machine: after weighing, conveying fat in a weighing hopper to a buffer hopper, and measuring pressure of the fat before the fat enters the mixing machine; and (4) performing controlling and warning, wherein the external control center monitors a liquid level, temperature and pressure in real time, and a control system normally runs. According to the addition method disclosed by the invention, automatic and accurate addition of the feed fat can be realized, accuracy in the weighing process is double guaranteed, and failure in the process is timely eliminated.