An automatic control system is provided for controlling the operation of a mass transfer system that includes a mass transfer column. The automatic control system includes a field data collection device that collects process data from the mass transfer system, a data collection module for receiving and storing process data received from the field data collection device, and an online simulator that includes a column simulation module for calculating a column performance parameter from the process data.

Proposed is a carbon dioxide capture and carbon resource recovery system for land use capable of removing carbon dioxide and recycling the captured carbon dioxide into other useful materials by capturing and converting carbon dioxide in the flue gas using a basic alkaline mixture. The carbon dioxide capture and carbon resource recovery system for land use can reduce carbon dioxide by capturing carbon dioxide in flue gas discharged from lands, such as thermal power plants, LNG, LPG, or fuel cell facilities, and by converting the collected carbon dioxide into sodium carbonate or sodium hydrogen carbonate, the collected carbon dioxide may be converted into other useful materials.

An absorption solvent regeneration device includes: a regenerator for regenerating an absorption solvent by separating CO.sub.2 from the absorption solvent which has absorbed CO.sub.2; a main rich solvent line for supplying the absorption solvent which has absorbed CO.sub.2 to the regenerator; a first heating part for heating the absorption solvent flowing through the main rich solvent line, the first heating part being disposed on the main rich solvent line; and a branch rich solvent line for supplying a part of the absorption solvent flowing through the main rich solvent line to the regenerator, the branch rich solvent line branching from the main rich solvent line. The absorption solvent regeneration device further includes a regulating part for regulating a ratio between a first flow rate of the absorption solvent flowing through the first branch portion and a second flow rate of the absorption solvent flowing through the second branch portion.

A tri-ethylene glycol (TEG) circulation system and method is implemented by a computer system, which periodically receives, from a temperature sensor and a flow sensor, respectively, a temperature signal representative of a temperature of a process gas upstream of a contactor column of a gas dehydration unit, and a flow rate signal representative of a flow rate of the process gas upstream of the contactor column. The process gas is cross-contacted with TEG within the contactor column to reduce water content of the process gas to satisfy a threshold water content. Using the temperature signal and the flow rate signal, the computer system periodically determines a quantity of TEG to be introduced into the contactor column to reduce the water content of the process gas to satisfy the threshold water content, and periodically controls an operation of a flow control valve configured to flow the TEG into the contactor column.

A method of managing foam in a gas processing system includes flowing a gas processing solution through a processing line and flowing an antifoaming agent through a treatment line into a mixed fluid line to form a fluid mixture, determining a foam level of the fluid mixture at a foam controller disposed along the mixed fluid line, automatically controlling a valve disposed along the treatment line to control a flow rate at which the antifoaming agent is flowed into the mixed fluid line to achieve a target dose of the antifoaming agent to be mixed with the gas processing solution in the mixed fluid line based on the foam level determined at the foam controller, and flowing the fluid mixture containing the target dose of the antifoaming agent into a system component to prevent an amount of the foam in the gas processing system from exceeding a threshold amount.

A natural gas pretreatment system includes: a carbon dioxide removal unit configured to remove carbon dioxide from the natural gas by bringing an absorption liquid and the natural gas into contact with each other; and a water removal unit configured to remove water by causing the natural gas to flow through a packed bed containing a water adsorbent. The packed bed contains a carbon dioxide adsorbent for adsorbing and removing the carbon dioxide that has not been completely removed in the carbon dioxide removal unit, and a concentration of the carbon dioxide contained in the natural gas is measured by an outlet-side carbon dioxide measurement unit on an outlet side of the water removal unit.

The present invention relates to a device for absorbing water using a liquid desiccant and the regeneration of said liquid desiccant by evaporating the absorbed water. The device may further be used in an air cooler. The invention also relates to a method for controlling a device for absorbing water.

A method for recovering an acidic gas, includes: a step of bringing a gas to be treated that contains an acidic gas into gas-liquid into contact with an amine absorbing solution, allowing the amine absorbing solution to absorb the acidic gas, thereby removing the acidic gas from the gas to be treated; a step of allowing the amine absorbing solution that has absorbed the acidic gas to release the acidic gas, thereby regenerating the amine absorbing solution, and at the same time, recovering the released acidic gas; and an analysis step of calculating concentrations of iron ions and/or heavy metal ions in the amine absorbing solution.

A system and method for processing unconditioned syngas first removes solids and semi-volatile organic compounds (SVOC), then removes volatile organic compounds (VOC), and then removes at least one sulfur containing compound from the syngas. Additional processing may be performed depending on such factors as the source of syngas being processed, the products, byproducts and intermediate products desired to be formed, captured or recycled and environmental considerations.

A CO.sub.2 recovery device includes: an absorption tower configured to bring an emission gas including CO.sub.2 in contact with an absorbent solution, to remove the CO.sub.2 from the emission gas, and to thereby generate a rich solution corresponding to the absorbent solution having absorbed the CO.sub.2; a regeneration tower configured to regenerate the absorbent solution by removing the CO.sub.2 from the rich solution; a heat exchanger configured to carry out heat exchange between the rich solution and the absorbent solution which is higher in temperature than the rich solution and from which the CO.sub.2 is removed; an absorbent-solution delivery pipe configured to deliver the absorbent solution subjected to the heat exchange in the heat exchanger to the absorption tower; and a bypass pipe configured to deliver the rich solution before the heat exchange to the absorbent-solution delivery pipe.