The present invention relates to a method and arrangement for reducing carbon dioxide in exhaust gases formed by combustion characterized by an exhaust system having a space (5) in which the exhaust gases are supplied to plant parts comprising chloroplasts with chlorophyll via means (6) for injection and an apparatus for generating and scattering of red light (7), preferably light from a laser and/or maser into the mixture of exhaust gases and plant parts, and of a grape sugar collecting device (8), and or, a collecting device (9) for water condensed from the exhaust gases.

A system and method of pre-purification of a feed gas stream is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the hydrogen, carbon monoxide, water, and carbon dioxide impurities from a feed air stream and is particularly suitable for use in a high purity or ultra-high purity nitrogen plant. The pre-purification systems and methods preferably employ two or more separate layers of hopcalite catalyst with the successive layers of the hopcalite separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layers.

A system and method of pre-purification of a feed gas stream is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the hydrogen, carbon monoxide, water, and carbon dioxide impurities from a feed air stream and is particularly suitable for use in a high purity or ultra-high purity nitrogen plant. The pre-purification systems and methods preferably employ two or more separate layers of hopcalite catalyst with the successive layers of the hopcalite separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layers. Alternatively, the pre-purification systems and methods employ a hopcalite catalyst layer and a noble metal catalyst layer separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layer.

A system and method of pre-purification of a feed gas stream is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the hydrogen, carbon monoxide, water, and carbon dioxide impurities from a feed air stream and is particularly suitable for use in a high purity or ultra-high purity nitrogen plant. The pre-purification systems and methods preferably employ two or more separate layers of hopcalite catalyst with the successive layers of the hopcalite separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layers. Alternatively, the pre-purification systems and methods employ a hopcalite catalyst layer and a noble metal catalyst layer separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layer.

STA-19, a molecular sieve having a GME structure and phosphorus in the framework, is described. STA-19AP (as prepared) can have a lower alkyl amine, such as trimethylamine, and olig-(1,4-diazabicyclo[2.2.2]octane)-pentyl dibromide ([DABCO-C5].sub.x where x represents the number of repeating units) or olig-(1,4-diazabicyclo[2.2.2] octane)-hexyl dibromide ([DABCO-C6].sub.x) as SDAs. A lower alkyl ammonium hydroxide, such as tetrabutylammonium hydroxide (TBAOH), can be used as a pH modifier for the preparation of SAPO-STA-19. A calcined product, STA-19C, formed from STA-19AP is also described. Methods of preparing STA-19AP, STA-19C and metal containing calcined counterparts of STA-19C are described along with methods of using STA-19C and metal containing calcined counterparts of STA-19C in a variety of processes, such as treating exhaust gases and converting methanol to olefins are described.

A purification device for exercise environment is provided and includes a main body, a purification unit, a gas guider and a gas detection module. The purification unit, the gas guider and the gas detection module are disposed in the main body to guide the gas outside the main body through the purification unit for filtering and purifying the gas, and discharge a purified gas. The gas detection module detects particle concentration of suspended particles contained in the purified gas. The gas guider is controlled to operate and export the gas at an airflow rate within 3 minutes. The particle concentration of the suspended particles contained in the purified gas, which is filtered by the purification unit, is reduced to and less than 0.75 μg/m.sup.3. Consequently, the purified gas is filtered, and an exerciser in an exercise environment can breathe with safety.

A sulfur trap provides separation of elemental molten sulfur from a process stream comprising a mixture of sulfur and associated tail-gases. The sulfur trap comprises a vertically-oriented cylindrical wall having a chamber for receiving the process stream, a float positioned in the chamber, the float attached to a float end of a lever, a nozzle insert attached to the distal end of the lever, and a lever fulcrum positioned intermediate the lever float end and the lever nozzle insert end. The float, lever, nozzle insert and outlet are constructed to allow the float position to control nozzle insert engagement of the outlet, particularly to close the outlet when the float is elevated by molten sulfur and to disengage from the outlet to allow discharge flow of liquid sulfur at a determined level of sulfur within the chamber. Embodiments of a method of separating liquid sulfur from gases are also provided.

In one embodiment, a separation membrane includes: a porous support structure; and at least one alkali metal hydroxide disposed within pores of the porous support structure. In another embodiment, a method for separating acidic gases from a gas mixture includes exposing the gas mixture to a separation membrane at an elevated temperature, where the separation membrane includes a porous support and at least one molten alkali metal hydroxide disposed within pores of the porous support.

A method for manufacturing an ammonia storage cartridge includes a step for supplying a material by ammonia absorption or adsorption by absorbent salts, a step for producing an intermediate element, including compacting the material to form the intermediate element, a step for stacking at least two intermediate elements in a shell of the cartridge, and a step for compressing the stack of intermediate elements in the shell.

The present invention relates to a method for the preparation of a molecular sieve of the CHA-type as well as catalytic applications thereof.