A method of operating an air purification system (24″) of an ion mobility spectrometer, the method comprising: operating the ion mobility spectrometer in a first sampling mode comprising circulating a flow of air around a closed air circulation system comprising a drift chamber (12) of the ion mobility spectrometer and a first sieve (70) of the air purification system; and operating the ion mobility spectrometer in a first regeneration mode comprising heating the first sieve and circulating a first flow of air through a second sieve (72) of the air purification system and through the drift chamber (12) while passing a second flow of air through the first sieve (70) to an outtake (76).

Disclosed in certain embodiments are methods of removing water from a gas feed stream comprising mercaptans and water during an adsorption step of an adsorption cycle.

Disclosed are embodiments of a cabin filter system including a sorbent material for removing gas and/or water from a cabin. The filter system also includes at least one heater configured to transmit thermal energy (e.g., microwave energy) to the sorbent material. Also disclosed are methods of using such filter systems.

A gas-absorbing material that contains amino group-having polymer compound particles and fine particles having a primary particle diameter of 1000 nm or less is a gas-absorbing material having a markedly higher gas absorption/desorption speed. Here, as the polymer compound of the amino group-having polymer compound particles, for example, a (meth)acrylamide polymer can be used, and as the fine particles, for example, water-repellent inorganic particles or fluororesin particles can be used.

A process for separating carbon dioxide from a feed gas comprising carbon dioxide may comprise compressing the feed gas in a feed gas compressor to produce a compressed feed gas. The process may also comprise separating the compressed feed gas by an adsorption process comprising: using a plurality of adsorbent beds to produce a carbon dioxide-enriched product stream and a carbon dioxide-depleted stream, and a blowdown step. A blowdown gas may be removed from the adsorbent bed. The process may also comprise compressing the blowdown gas in the feed gas compressor and combining the blowdown gas with the compressed feed gas.

An exhaust fan for preventing air pollution includes a main body and at least one gas detection module. The main body is configured to form an airflow-guiding path and includes a gas guider and a filtration and purification component disposed in the airflow-guiding path. The gas guider introduces an air convection for guiding an air pollution source contained in an air to pass through the filtration and purification component so as to filter and purify the air pollution source. The at least one gas detection module is disposed in the airflow-guiding path for detecting the air pollution source and transmitting gas detection data.

The invention relates to dispersions of porous solids in liquids selected from deep eutectic solvents, liquid oligomers, bulky liquids, liquid polymers, silicone oils, halogenated oils, paraffin oils or triglyceride oils, as well as to their methods of preparation. In embodiments of the invention, the porous solids are metal organic framework materials (MOFs), zeolites, covalent organic frameworks (COFs), porous inorganic materials, Mobil Compositions of Matter (MCMs) or a porous carbon. The invention also relates to the use of porous materials to form dispersions, and to assemblages of such dispersions with a gas or gases. The dispersions can exhibit high gas capacities and selectivities.

A vacuum cleaner for air pollution prevention includes a main body, a blower, a filtering and cleaning assembly, and a gas detection module. The main body is configured to form a flow-guiding path. The blower is disposed in the flow-guiding path to guide air convection. The filtering and cleaning assembly is disposed in the flow-guiding path to filter and clean the air pollution source in the air guided by the blower. The gas detection module is disposed in the flow-guiding path to detect the air pollution source and transmits a gas detection data.

Provided is a new heat source device that utilizes the catalytic reaction heat as a heat source for industries. The heat source device 100 utilizing the catalytic reaction heat of silver zeolite 1 includes an accommodation container 10 for accommodating the silver zeolite 1 while ensuring air permeability, wherein the accommodation container 10 is configured to be ventilated with a mixed gas G containing hydrogen, steam, and air. The mixed gas has a hydrogen concentration of 1 to 20% by volume, a steam concentration of 1 to 95% by volume, an air concentration of 1 to 95% by volume, and a temperature of 100° C. or higher.

The inventive concepts disclosed and claimed herein are generally directed to an improved assisted walking device, such as a cane, walker or wheelchair, that includes an integrated oxygen concentrator housed within the assisted walking device. In some embodiments, for example, the improved assisted walking device includes a handle, a control pad, an elongated housing having an interior chamber, an oxygen concentrator, a leg member and a foot member. The oxygen concentrator detachably positioned within the interior chamber of the elongated housing and including an adsorption system configured to generate a flow of oxygen enriched gas, a compressor that includes a motor, a battery, a plurality of sieve beds configured to extract oxygen-enriched gas from ambient air, and a controller in communication with the control pad.