摘要:
Presented is a filtration system (10) for removing a target gaseous pollutant from a gas to be filtered in an indoor space, the filtration system (10) comprising: a sensor arrangement (12), which comprises a gas sensor (14) for sensing a concentration of a target gas in the indoor space; an air cleaner (20) which comprises a filter (22) for filtering the target gas from the gas to be filtered, and a ventilation system (24) for controllably driving air through the filter (22), wherein the filter (22) comprises a reversible absorption filter or a reversible adsorption filter; and a controller (26) for controlling ventilation system air flow settings, wherein the controller (26) is adapted, based on current sensor arrangement signals, and a previous history of the sensor arrangement signals, and previous ventilation system air flow settings, to: determine a degree of filter (22) loading with the target gas; determine from the degree of filter (22) loading with the target gas a concentration of the target gas in the air flow exiting the air cleaner (20); and determine when filter (22) regeneration is taking place and when air filtering is taking place from the determined concentration of the target gas in the air flow exiting the air cleaner (20). Further, a method of controlling a filtration system for removing a target gaseous pollutant from a gas to be filtered in an indoor space is presented.
摘要:
[Problem] To provide a waste material treatment apparatus that renders waste materials harmless and reduces the volume thereof while restraining generation of dioxins as much as possible, and that at the same time enables recycling of plastics. [Solution] In order to solve the above problems, provided is a waste material treatment apparatus which: supplies a reactant to facilitate a prompt reaction between an oxidation agent or a neutralizing agent and gases that contain chlorine, hydrocarbons, etc., and that are emitted from non-plastic garbage present in waste materials when heated instantaneously; renders the non-plastic garbage harmless and reduced in volume without generating dioxins or carbon dioxide by repeating the instantaneous heating; and renders plastics harmless and cleaned, thereby enabling recycling thereof.
摘要:
A graphene adsorbing material, a preparation method therefor and application thereof, and a cigarette filter tip and a cigarette are provided. The graphene adsorbing material comprises a fiber carrier, graphene and doped elements wherein the graphene and the doped elements are loaded on the fiber carrier and the doped elements comprise at least one of Al, Si and Fe. The graphene adsorbing material is obtained by contacting the fibers with the graphene material to load the graphene material on the fibers. By introducing the graphene and the doped elements in the fiber carrier, harmful substances with a type of fused aromatic hydrocarbons such as benzopyrene in smoke can be specifically adsorbed, filtered and removed; while nicotine and the other harmless substances are retained, and thus the smoking taste of a cigarette is not affected. The cigarette filter tip can effectively adsorb cancerogenic substances with a type of fused aromatic hydrocarbons such as benzopyrene in smoke to reduce harm of smoking; meanwhile, the pleasure of smoking and the mellow taste of the smoke are not affected. Besides, the graphene adsorbing material can also prevent the phenomenon that a cigarette holder gets mildewed due to humid environment and the other factors.
摘要:
The present invention relates to Cellulose and/or Lignin used as catalyst and/or sorbent support, carrier and/or binder, leading to strong but flexible structures such as porous monoliths, wire mesh or shaped particles which can accommodate variations in catalyst and/or sorbent loadings as well as temperature and pressure fluctuations and humidity swings, this without loss of sorption capacity and mechanical integrity to prevent attrition, fines, losses etc. This sorbent/catalyst can be produced from waste biomass and can be recycled, reused, dissolved and re-precipitated making use of solvents like ZnCl2.
摘要:
A process is described for the preparation of a microporous carbon from a hyper-cross- linked polymer of formula (II), in which A is selected from a C atom, a Si atom, a Ge atom, a Sn atom, an adamantane group, an ethane group and an ethene group, in which each of B, C, D and E are ring structures selected from radicals of the compounds benzene, naphthalene, anthracene, phenanthrene, pyrene, optionally having one or more substituents selected from nitro, amine, hydroxyl, sulfonyl, halogen, phenyl, alkyl, haloalkyl, hydroxyalkyl, aminoalkyl, aryl, alkenyl and alkynyl groups, and in which n is an integer between 200 and 6000.
摘要:
The present invention relates to a method for reducing a flow of soil air to the indoor air in a building (1), wherein the building comprises at least one wall (2), which wall comprises a permeable channel (23) connected with soil air, wherein the method comprises achieving a flow stop (24) for the soil air in the permeable channel (23). The invention also pertains to a device to reduce the flow of soil air to indoor air in a building (1).
摘要:
Mercury adsorbed from combustion gas by activated carbon can be sequestered in concrete containing air entraining admixtures. The activated carbon may be made by providing a carbon char made from anthracite or low-volatile bituminous coal that was devolatilized and carbonized in an oxygen-depleted environment and activating this char in the presence of steam to provide an activated carbon with an acid blue 80 index of less than about 30 milligrams per gram of carbon. The activated carbon may also be made by providing a carbon char that was devolatilized and carbonized in an oxygen-depleted environment and activating this char in the presence of oxygen to provide an activated carbon. The carbon may be injected into a combustion gas stream containing fly ash and mercury and may then be removed with fly ash from the gas stream. The resulting composition may be used as a partial substitute for cement in air-entrained concretes.
摘要:
In a carbon porous body of the present invention, a volume of pores having diameters of 2 nm or less, the volume being determined by DFT analysis, is 0.12 mL/g or less, and a nitrogen adsorption isotherm at a temperature of 77 K belongs to Type IV of an IUPAC classification (type showing that the porous body has mesopores). In the nitrogen adsorption isotherm, an amount of adsorption at a relative pressure P/P 0 of 0.5 is 0.8 g/g or less and an amount of adsorption at a relative pressure P/P 0 of 0.9 is 1.5 g/g or more.
摘要:
A method is described for preparing a sorbent comprising the steps of: (i) forming agglomerates comprising a particulate support material, (ii) coating the agglomerates with a coating mixture powder comprising a particulate copper sulphide and a particulate calcined, rehydratable alumina to form a coated agglomerate, and (iii) drying the coated agglomerate to form a dried sorbent.
摘要:
An air purifier has a housing with an inlet for receiving air and an outlet for exhausting air. The housing provides an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet. Particulate pre-filtration is located within the housing downstream from the air inlet. VOC pre-filtration is located within the housing downstream from the particulate pre-filtration. UV filtration is located within the housing downstream from the VOC pre-filtration. VOC post-filtration is located within the housing downstream from the UV filtration. Final particulate filtration is located within the housing downstream from the VOC post-filtration.