Device for drying compressed gas having at least two vessels containing a regenerable drying agent and an controllable valve system with a first valve block and a second valve block. The device is further provided with a first regeneration line with heating means and a second regeneration line for discharging saturated regeneration gas. The regeneration lines are connected to a different valve block, wherein in the first regeneration line between a blow-off opening or blower and the heating means an additional vessel with a regenerable drying agent is incorporated.

The present invention relates to a drying apparatus capable of regenerating an adsorbent used for drying using microwaves. The drying apparatus of the present invention is formed to include a microwave irradiation means configured to irradiate microwaves to the adsorbent in a plurality of reaction towers in which the adsorbent adsorbing moisture or carbon dioxide is embedded, and when regenerating the adsorbent, directly heats the adsorbent using microwaves, thereby shortening a heating time and securing a sufficient cooling time, resulting in the effect of reducing the amount of dry air consumed for cooling and further increasing the drying efficiency.

An apparatus for steam reforming includes a reactor, a condensate separator, a condensate stripper, and a steam boiler. The reactor produces hydrogen and is connected to the condensate separator such that a gas mixture is conducted from the reactor into the condensate separator. The condensate separator and the condensate stripper are connected so that condensate separated out in the condensate separator is conducted into the condensate stripper. The condensate separator and the steam boiler are connected such that cleaned condensate can be conducted into the steam boiler. The steam boiler is connected to the reactor and to the condensate stripper in a steam-conducting manner. The boiler water feed line of the steam boiler is connectable to the condensate stripper in a liquid-conducting manner. A supply from the boiler water feed line is at a same location of the condensate stripper as a supply of the condensate from the condensate separator.

This disclosure is related to systems, methods, apparatuses, and techniques for generating water using waste heat. In certain embodiments, a system includes a water generating unit and a waste-heat-generating-system. The water generating unit can be configured to generate the water and comprises a desiccation device and a condenser coupled to the desiccation device. The waste-heat-generating-system can generate the waste heat when operating or is use. The water generating unit can be configured to use waste heat generated by the waste-heat-generating-system to generate the water.

Hygroscopic hydrogels including a cross-linked polymer, the polymer being prepared by polymerization of one or more monomers, wherein at least one of the monomers is a compound of formula I, are provided. Related monomers and polymers, as well as methods for the production and use thereof, are also provided. Hygroscopic hydrogels as described herein may be used for water harvesting, for example. (I) (formula I)

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A system for recovering natural gas liquid from a source, comprising: a heat exchanger for cooling wellstream fluid directed therethrough; a first separator for receiving the fluid from the heat exchanger for separating liquid and gas; in a first configuration, the gas from the first separator being directed to a turbo-expander for reducing the temperature and pressure of the gas to form a cold fluid; the cold fluid being directed to a second separator for separating liquid and gas; gas from the second separator being directed to the heat exchanger where it flows therethrough for cooling the wellstream fluid; wherein if the turbo-expander is not operating, the first configuration may be a changed to a second configuration to bypass the turbo-expander and direct the gas from the second separator to a Joule-Thomson valve to form the cold fluid.

A system for recovering natural gas liquid from a source, comprising: a heat exchanger for cooling wellstream fluid directed therethrough; a first separator for receiving the fluid from the heat exchanger for separating liquid and gas; in a first configuration, the gas from the first separator being directed to a turbo-expander for reducing the temperature and pressure of the gas to form a cold fluid; the cold fluid being directed to a second separator for separating liquid and gas; gas from the second separator being directed to the heat exchanger where it flows therethrough for cooling the wellstream fluid; wherein if the turbo-expander is not operating, the first configuration may be a changed to a second configuration to bypass the turbo-expander and direct the gas from the second separator to a Joule-Thomson valve to form the cold fluid.

A heat exchanger comprises a stack of sets of fins and tubes attached to or encompassed by embossed plates comprising a void. In some embodiments, the fins overlap the void having a peripheral margin of the fin attached to the peripheral margin around the void. In some embodiments, the fins comprise through fluid apertures allowing lateral fluid flow. In some embodiments, the plates comprise lateral peripheral protrusions enabling selective sealing of gaps between adjacent stacked plates by unselective application of heat or adhesive to a face of the heat exchanger. In some embodiments, the plates comprise uniformizing protrusions in a fluid inlet and/or outlet zone that reduce the amount of non-uniform fluid mass flow between different channel protrusions of heat exchanging zones of the set. Also disclosed are methods for assembly and selective sealing of the heat exchanger and an apparatus comprising the same.

A coalescence filter for purifying a fluid which contains a carrier and at least one liquid contaminant by coalescing of the at least one contaminant, where the coalescence filter includes an inlet for supplying the fluid to a filter element present in the coalescence filter, where the filter element includes a primary coalescence medium which is provided for coalescing of the at least one contaminant in the primary coalescence medium during the displacement of the fluid through the primary coalescence medium. The coalescence filter further includes an outlet for discharging the coalesced contaminant from the filter element, where the primary coalescence medium comprises at least one layer of a porous material, where the primary coalescence medium has a total thickness of at least 3.5 mm.

Provided an air cleaning system, which includes: a first reactor which has a first inlet and a first outlet and in which a channel is formed; a first moisture adsorption filter and a first water-soluble gas pollutant adsorption filter that are provided inside the first reactor and are provided so that a gas passes therethrough sequentially while flowing along the channel from the first inlet to the first outlet; a plurality of first magnetrons that are provided at a lateral portion of the first reactor so as to correspond respectively to the first moisture adsorption filter and the first water-soluble gas pollutant adsorption filter and selectively apply microwaves to the first moisture adsorption filter and the first water-soluble gas pollutant adsorption filter; and a heat exchanger that receives hot air containing a water-soluble gas pollutant and moisture, both of which are desorbed from the first moisture adsorption filter and the first water-soluble gas pollutant adsorption filter and are discharged by the first outlet, condenses the moisture into water, and dissolves and discharges the water-soluble gas pollutant in the condensed water. According to the present invention, the air cleaning system can unify a dehumidifying process and a water-soluble gas pollutant removing process to simplify an air cleaning process, recover and recycle waste heat by introducing microwaves and the heat exchanger so as to contribute to energy saving, and be used semi-permanently without a need to periodically replace a filter.