摘要:
Heat liberated during an exothermic biochemical reaction is utilized in carrying out an operation requiring energy such as drying the product obtained from the reaction or sterilizing the substrate used for the reaction. The liberated heat is absorbed by a vaporizable cooling medium for transfer to the operation requiring energy. Alternatively the temperature of the cooling medium subsequent to the absorption of heat thereby is raised by compressing the vaporized cooling medium. The heating cooling medium is used to carry out the operation requiring energy. An arrangement which includes a bioreactor is also disclosed and includes heat pump means for permitting utilization of heat liberated during an exothermic biochemical reaction in the performance of an operation requiring energy.
摘要:
In a method for the recovery of enzymes, the activity of which after the treatment of starch-containing raw materials used for the production of fermentation alcohol is still not exhausted, the liquid phase containing solutions with still active enzymes after the first separation of the protein fraction is led to a fermentation, then a distillation. The wash water for the protein fraction is provided with a portion of the total amount of alpha-amylase necessary for starch hydrolysis of the raw material and then solids are again separated. The enzyme-containing wash water for the second separated solids is led back into the first enzymatic degradation stage simultaneously with a portion of the slop coming from the distillation.
摘要:
A method of aerating liquids, particularly for aerobic growing of microorganisms, has the steps of forming a circumferential stream of liquid, forming a longitudinal stream of liquid, and superimposing these streams so as to form a combined closed spiral-shaped stream. An arrangement is provided in which the circumferential stream is formed by an upright conduit tube and an impeller, the longitudinal stream is formed by a distributing element with a plurality of nozzles, and the superimposing of the streams is attained by fixedly mounting the distributing element relative to the impeller.
摘要:
The invention relates to aqueous detergent concentrates based on nonionic, anionic, amphoteric surfactants, with or without the use of customary auxiliaries and additives, said concentrates comprising as cleaning enhancers at least one sorbitan ester of the general formula (I) where R can be an optionally branched, optionally substituted and/or heteroatom-containing saturated or unsaturated acyl radical having 6 to 22 carbon atoms, R1 and R2 independently of one another can be hydrogen or R, Alk is at least one radical from the group consisting of ethylene-, isopropylene-, and butylene-, and a, b and c independently of one another can be values between 0 to 25, where the sum of a+b+c=0 to 25.
摘要翻译:本发明涉及基于非离子,阴离子,两性表面活性剂的含水洗涤剂浓缩物,具有或不使用常规助剂和添加剂,所述浓缩物包含作为清洁增强剂的至少一种通式(I)的脱水山梨糖醇酯,其中R可以是 具有6-22个碳原子的任选支链,任选取代和/或含杂原子的饱和或不饱和酰基,R 1和R 2彼此独立地可以是氢或R,Alk是至少一个选自乙烯基, 异亚丙基 - 和亚丁基,以及a,b和c彼此独立地可以是0至25之间的值,其中a + b + c = 0至25的和。
摘要:
Methods, treatment compositions and treatment systems are disclosed for forming a detachable and renewable coating on a receptive surface by a process of applying a treatment composition comprising a plurality of hydrophobically modified fumed silica particles colloidally dispersed in a volatile solvent; allowing the volatile solvent to evaporate; and thereby depositing a protective coating on the receptive surface consisting of a layer of the hydrophobically modified particles, which provide a substantially transparent coating with dirt- and water-repellency properties that effectively shed dry particulate soils as well as water from the treated surface or treated article bearing a receptive surface. The methods, treatment compositions and treatment systems employing the hydrophobically modified fumed silica particle are particularly useful in providing nearly invisible detachable coatings and treated articles featuring surface protective benefits including dirt- and water-repellency, self-cleaning with water, and easier cleaning benefits when applied to a variety of automotive and home surfaces, both interior and exterior, including articles and materials such as metals, painted materials, sealed materials, plastics and polymeric articles, wood, textiles and the like.
摘要:
Process for melting down and degassing lumpy material by means of inductive heating and under subatmospheric pressure in a melting crucible. For the purpose of shortening the duration of the process, scavenging gas and/or reaction gas is introduced into the bottom region of the melting crucible during at least 50% of the duration of the process until the material is melted down completely.
摘要:
Paste and liquid emulsion care compositions for cleaning, caring for and paving paint and trim components of motor vehicles are provided. The compositions include, as a UV filter, from 2% to 15% by weight, based on the total weight of the composition, of zinc oxide with particle sizes in the nm range. The zinc oxide can be coated to provide a hydrophobic coating thereon.
摘要:
The invention relates to the method of preparing an agent for a hair care preparation based on diacetyl tartrate esters of fatty acid glycerides of the following general formula: ##STR1## wherein Ac is the acetyl group, FA is the acyl group of a fatty acid or of a fatty acid mixture with 8 to 18 carbon atoms, and a) and b) being present in a ratio by weight of 100:0 to 60:40.
摘要:
In a melting crucible (3) a central bottom portion (27) is formed of a plurality of palisades (5) and is shaped so that the palisades together form a vessel or a pot (7) having a centrally disposed spout or outlet (8). Two independently powered induction coils (10, 11) are provided, one coil (10) externally surrounding the collar or upper part of the central bottom portion (27), and the other coil (11) externally surrounding the spout (8). The palisades (5) are separated from one another by individual gaps (6) running radially outwardly from the center, while the electromagnetic field of at least the upper coil (10) acts on the charge contained in the melting crucible through the gaps (6).
摘要:
Method for the electroslag refining of metals of which at least 50 weight-percent are in the form of at least one current-carrying consumable electrode, especially one having alloy components with an affinity for oxygen, wherein the metals are remelted to an ingot through a molten bath of slag. To achieve the object of preventing oxidation, freckling, rings and white spots and at the same time produce a degassing, the following measures are undertaken: (a) the refining process is performed at a subatmospheric pressure, (b) the slag is an at least 80 weight-percent oxidic slag of oxides whose boiling points are above 2000.degree. C., and (c) the slag is heated by means of alternating current.