摘要:
The subject invention provides a potentially economically viable process for the microwave destruction of contaminated waste consisting essentially of chemical and biological agents and harmful medical waste by employing carbonaceous materials to enhance the efficiency of the microwaves while keeping the bulk temperature down to a modest rise.
摘要:
This invention is directed to a method of making an olefin product from an oxygenate feedstock and a method of protecting catalytic activity of a silicoaluminophosphate molecular sieve. The methods comprise providing a silicoaluminophosphate molecular sieve having catalytic sites within the molecular sieve; shielding the catalytic sites to protect from loss of catalytic activity; and contacting the protected sieve in its activated state with an oxygenate feedstock under conditions effective to produce an olefin product before undesirable loss of catalytic activity. Undesirable loss in catalytic activity occurs when activated molecular sieve contacting the oxygenate feedstock has a methanol uptake index of at least 0.15.
摘要:
The invention provides for a method for removing elemental mercury from a fluid, the method comprising irradiating the mercury with light having a wavelength of approximately 254 nm. The method is implemented in situ at various fuel combustion locations such as power plants and municipal incinerators.
摘要:
A new method for design and scale-up of photocatalytic and thermocatalytic processes is disclosed. The method is based on optimizing photoprocess energetics by decoupling of the process energy efficiency from the DRE for target contaminants. The technique is applicable to both low and high-flux photoreactor design and scale-up. The low-flux method is based on the implementation of natural biopolymeric and other low-pressure drop media support for titanium dioxide and other band-gap photocatalysts. The high-flux method is based on the implementation of multifunctional metal oxide aerogels and other media in conjunction with a novel rotating fluidized particle bed reactor.
摘要:
A method for converting methane, ethane, and propane into higher molecular weight hydrocarbons and coproduct hydrogen wherein a molecular oxidant-free gas comprising methane, ethane, and/or propane is exposed to ultraviolet light. Through an oxidative coupling mechanism, the feed gases are converted to free radicals which combine to form higher molecular weight hydrocarbons.
摘要:
A process for the extraction and concentration of unsaponifiable substances, containing liposoluble vitamins and provitamins, growth factors and animal and vegetable hormones, from residues of the industrialization of animal or vegetable products. This process does not require the use of solvents. Its main goal is to obtain the separation of these “valuable products”, by means of distillation/evaporation at high vacuum, and the production of fatty acids and other high quality organic acids, once the recovery of the unsaponifiable fraction of residues from the industrialization of animal or vegetable products, is of great commercial interest. This is due to the fact that the “valuable products”, have in many cases, vitamin activity, such as: tocopherols, sterols, carotenoids, vitamin A, vitamin K, vitamin D, while other products present cholesterol reducing properties, such as: sterols, tocotrienols, esqualene, etc; or even, anti-oxidant properties like: tocopherols, tocotrienols; as well as anti-carcinogenic properties such as: tocotrienols, sterols, lycopene, and alpha-carotene. Some other products are used as a structure for chemical-synthesis, like for example: sterols for hormone synthesis, vitamin D synthesis; and other products which have nutraceutic properties, apart from the commercial interest in some products, the cosmetic formulas of which present emulsifying properties, emulsion stabilizers and/or viscosity modifiers like for example sterols.
摘要:
A method of treatment of liquid, air and surfaces using UV radiation with a pulse duration of 10−6 to 10−3 sec. and a radiation intensity of at least 100 kWt/m2, using a plasma radiation source with a pulsed storage element, wherein the energy stored in the storage element at the time of discharge, the pulse duration and the area of the radiating surface of the radiation source are interrelated as follows: W0/A Srad t ½>1, where W0, is the energy stored in the storage element, Joules; Srad is the area of the radiating surface of the radiation source, m2; t½ is the radiation pulse duration at mid-height of a peak, sec.; A=108 Wt/m2 is the constant coefficient. A device for the UV treatment of liquid, air and surfaces includes a secondary winding integrated in a series with a charged condenser, and a pulsed lamp to form a discharging circuit.
摘要翻译:使用脉冲持续时间为10-6至10-3秒的UV辐射处理液体,空气和表面的方法。 以及使用具有脉冲存储元件的等离子体辐射源的至少100kWt / m 2的辐射强度,其中在放电时存储在存储元件中的能量,辐射的辐射表面的脉冲持续时间和面积 源是相互关联的,如下所示:W0 / A Srad t½> 1,其中W0是存储元件中的能量,焦耳; Srad是辐射源辐射面的面积,m2; t 1/2是峰值的中间高度处的辐射脉冲持续时间。 A = 108 Wt / m2是常数系数。 用于液体,空气和表面的UV处理的装置包括与充电的冷凝器串联集成的次级绕组和用于形成放电电路的脉冲灯。
摘要:
Disclosed is a rubber process oil in which the content of polycyclic aromatics (PCAs) as determined by the IP 346 method is less than 3% by mass and which is rich In aromatic hydrocarbons, and a method for producing the same. The aniline point of the rubber process oil is 80° C. or less, and the % CA value as determined by ring analysis according to the Kurtz method is from 20 to 50%. The rubber process oil is produced by using extraction of lube oil fraction with a solvent having a selective affinity for aromatics. The extraction conditions are determined so that the extraction yield is regulated to a predetermined requirement defined by the PCAs content of the lube oil fraction. Alternatively, the extract is cooled to further separate into the extract and the raffinate, and the second raffinate is used for the rubber process oil.
摘要:
Trans-xanthophyll ester concentrates having a trans-xanthophyll ester content of at least four times greater and preferably at least nine times greater than the cis-xanthophyll ester content are obtained. Xanthophyll ester concentrates having a total xanthophyll ester content of at least 40 wt. % and preferably greater than about 55 wt. % are also obtained. A method of obtaining a trans-xanthophyll ester concentrate of high purity includes contacting plant material containing xanthophyll esters with a hydrocarbon solvent for a time sufficient to extract xanthophyll esters from the plant material, separating the hydrocarbon solvent and extract dissolved therein from the remaining plant material, evaporating the hydrocarbon solvent from the dissolved extract to obtain a crude xanthophyll ester concentrate, admixing the crude xanthophyll ester concentrate with an alcohol at approximately ambient temperature to dissolve non-xanthophyll impurities and cis-xanthophyll esters from the concentrate and removing the alcohol containing impurities and cis-xanthophyll esters from the crude trans-xanthophyll concentrate to obtain a purified trans-xanthophyll ester concentrate. By using only the corollas of marigold flowers, lutein ester concentrates of high purity are obtained with pesticide residues absent from the concentrate at parts per billion detection levels.