A chemical protective shelter system for encapsulating an uncontaminated person or persons is presented. The chemical protective shelter system has a cover assembly extending a length between a top end and a bottom end and having interior surface and an exterior surface and an opening which can be opened and closed repeatedly while still sealing. The chemical protective shelter system includes a layer of a chemical adsorbent material capable of filtering chemical agents while allowing oxygen and carbon dioxide to pass through the material. The chemical protective shelter is specially adapted to house a plurality of people and facilitate a tent like function. The system also includes a port for auxiliary filtered air. The system may also include a powered air purifying respirator which positively pressures the interior space of the system.

Technologies for combusting hazardous compounds such as chemical warfare agents and related compounds are disclosed. In embodiments, the technologies include systems and methods for combusting such compounds in an internal combustion engine, such as a spark ignition internal combustion engine, a diesel engine, or the like. The technologies described herein further include components for treating an exhaust gas stream produced by combustion of hazardous compounds. In embodiments such components include a scrubber that utilizes a scrubbing media such as soil to removing acid gases from the exhaust stream.

The present invention provides an improved sorbent and corresponding device(s) and uses thereof for the capture and stabilization of volatile organic compounds (VOC) or semi-volatile organic compounds (SVOC) from a gaseous atmosphere. The sorbent is capable of rapid and high uptake of one or more compounds and provides quantitative release (recovery) of the compound(s) when exposed to elevated temperature and/or organic solvent. Uses of particular improved grades of mesoporous silica are disclosed.

The present invention provides an improved sorbent and corresponding device(s) and uses thereof for the capture and stabilization of volatile organic compounds (VOC) or semi-volatile organic compounds (SVOC) from a gaseous atmosphere. The sorbent is capable of rapid and high uptake of one or more compounds and provides quantitative release (recovery) of the compound(s) when exposed to elevated temperature and/or organic solvent. Uses of particular improved grades of mesoporous silica are disclosed.

The present invention removes, by a preprocessing unit, harmful chemical materials and radioactive materials supplied to a positive pressure chamber and a negative pressure chamber and supplies same, removes contaminants discharged to the outside from the negative pressure chamber and sterilizes bacteria and floating viruses and discharges same, and adjusts, by a control circuit of a control panel, the rotating speed (RPM) of an air supply/discharge fan and adjusts the opening rate of an electric damper according to data that is measured in a pressure sensor provided in a space in which the positive pressure and the negative pressure are to be maintained and is transmitted in real time.

A thermal desorption tube for chromatography and mass spectrometry analysis. The thermal desorption tube includes a sorbent and a plurality of focusing agents loaded at known, relative amounts onto the sorbent. Each focusing agent is a compound that chromatographically elutes within a retention time similar to a retention time of a target analyte and has a mass spectrum similar to a mass spectrum of the target analyte. The thermal desorption tube is configured to be further loaded with a sample having the target analyte.

A filter is provided for removing contaminants from a gas flow (e.g., an air flow). Multiple panel filters are arranged in a filter housing. The panel filters are arranged parallel or near-parallel to a main gas flow direction and spaced apart to define elongated gas flow channels between adjacent panel filters, each elongated gas flow channel extending generally in the gas flow direction. The elongated gas flow channels include inlet channel(s) and outlet channel(a) arranged in an alternating manner, the inlet channel(s) configured receiving the gas flow at the inlet end and the outlet channel(s) outputting a filtered gas flow from the outlet end. Gas flow redirecting structures are arranged to redirect the gas flow in each inlet channel through adjacent panel filter(s) and into adjacent outlet channel(s). The filter may provide a pressure drop of less than 3 iwg, less than 1 iwg, or less than 0.3 iwg.

A chemical protective shelter system for encapsulating an uncontaminated person or persons is presented. The chemical protective shelter system has a cover assembly extending a length between a top end and a bottom end and having interior surface and an exterior surface and an opening which can be opened and closed repeatedly while still sealing. The chemical protective shelter system includes a layer of a chemical adsorbent material capable of filtering chemical agents while allowing oxygen and carbon dioxide to pass through the material. The chemical protective shelter is specially adapted to house a plurality of people and facilitate a tent like function. The system also includes a port for auxiliary filtered air. The system may also include a powered air purifying respirator which positively pressures the interior space of the system.

A catalytic recombiner and filter apparatus is especially suited for placement in a containment of a nuclear reactor. The apparatus has a natural convection flow duct with a number of catalytic elements for recombining hydrogen and oxygen contained in a gas flow through the flow duct. The catalytic recombiner and filter apparatus provides for reliable hydrogen reduction and iodine filtering for a gas flow even for a comparatively long period of operation. The catalytic recombiner and filter apparatus includes a number of adsorber elements with iodine adsorbing surfaces and with macroscopic flow channels in between. The iodine adsorbing surfaces are flown over by the gas flow, and the adsorber elements are arranged, when in use, downstream of the catalytic elements in a direction of the gas flow.

The present invention removes, by a preprocessing unit, harmful chemical materials and radioactive materials supplied to a positive pressure chamber and a negative pressure chamber and supplies same, removes contaminants discharged to the outside from the negative pressure chamber and sterilizes bacteria and floating viruses and discharges same, and adjusts, by a control circuit of a control panel, the rotating speed (RPM) of an air supply/discharge fan and adjusts the opening rate of an electric damper according to data that is measured in a pressure sensor provided in a space in which the positive pressure and the negative pressure are to be maintained and is transmitted in real time.