222 absorption and desorption system comprises a water washing tower (1), an absorption tower (2), a regeneration tower (3), a rich liquid pipeline (1003) and a lean liquid pipeline (1004); the water washing tower (1) comprises a first feeding port (101) and a first tower top outlet (102), and the first feeding port (101) is connected to a waste gas feeding pipeline (1001) and a supplementary water pipeline (1002) separately; the absorption tower (2) comprises a second feeding port (201), a first tower top inlet (202) and a second tower bottom outlet (203); the first tower top outlet (102) is connected to the second feeding port (201); the regeneration tower (3) comprises a third feeding port (301), a fourth feeding port (302), a second tower top inlet (303), a third tower bottom outlet (304) and a third tower top outlet (305); the third feeding port (301) is located above the fourth feeding port (302); and the third tower top outlet (305) is connected to the second tower top inlet (303) by means of a water cooler (306) to form a tower top circulation loop (1006). According to the system and the method, the content of sulfur dioxide in an outlet gas can be reduced, the desulfurization efficiency can be further improved, and sulfur dioxide can be further recycled, thereby satisfying the requirements of energy conservation and environmental protection, and improving the absorption effect.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
A heat exchanger, comprising: a top cover (2) which is provided with a top cavity (21); a liquid-collecting chamber (1) which is provided with a liquid-collecting cavity (11); a housing (3) which is provided with a receiving cavity (31), neither of the liquid-collecting cavity (11) nor the top cavity (21) being in connection with the receiving cavity (31); an upper tube plate (4); a lower tube plate (5); and a heat exchange tube (6) which sequentially passes through the top cavity (21), the upper tube plate (4), the receiving cavity (31), the lower tube plate (5), and the liquid-collecting cavity (11); the two ends of the heat exchange tube (6) are in connection with the liquid-collecting cavity (11) and the top cavity (21), respectively; sealing members (8) are provided between the outer circumference of the heat exchange tube (6) and the upper tube plate (4) and between the outer circumference of the heat exchange tube (6) and the lower tube plate (5). By means of the three-section structure consisting of the liquid-collecting chamber (1), the top cover (2), and the housing (3), and the structure of the heat exchange tube (6) respectively passing through the upper tube plate (4) and the lower tube plate (5) in a dismountable manner, the heat exchanger is easy to mount and dismount, easing the maintenance and cleaning of the heat exchanger; the heat exchanger can be used, in particular, in the heat exchange of a strongly corrosive medium under a high temperature, and has a compact structure and high heat exchange efficiency.
F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
F28F 9/22 - Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
F28F 17/00 - Removing ice or water from heat-exchange apparatus
4.
ACID PRODUCTION DEVICE AND ACID PRODUCTION PROCESS USING MULTI-STAGE OXIDATION OF HYDROGEN SULFIDE ACIDIC GAS
2|2|2|22222 process gas to form sulfuric acid. The acid fog collector is connected to the sulfuric acid vapor condenser, and the junction is between the gas inlet and the exhaust outlet of the sulfuric acid vapor condenser. Said process can simultaneously process hydrogen sulfide acidic gas of both high and low concentrations, and can significantly reduce equipment investment and operation costs.
A heat exchanger, comprising: a top cover (2) which is provided with a top cavity (21); a liquid-collecting chamber (1) which is provided with a liquid-collecting cavity (11); a housing (3) which is provided with a receiving cavity (31), neither of the liquid-collecting cavity (11) nor the top cavity (21) being in communication with the receiving cavity (31); an upper tube plate (4); a lower tube plate (5); and a heat exchange tube (6) which sequentially passes through the top cavity (21), the upper tube plate (4), the receiving cavity (31), the lower tube plate (5), and the liquid-collecting cavity (11); the two ends of the heat exchange tube (6) are in communication with the liquid-collecting cavity (11) and the top cavity (21), respectively; sealing members (8) are provided between the outer circumference of the heat exchange tube (6) and the upper tube plate (4) and between the outer circumference of the heat exchange tube (6) and the lower tube plate (5). By means of the three-section structure consisting of the liquid-collecting chamber (1), the top cover (2), and the housing (3), and the structure of the heat exchange tube (6) respectively passing through the upper tube plate (4) and the lower tube plate (5) in a dismountable manner, the heat exchanger is easy to mount and dismount, facilitating the maintenance and cleaning of the heat exchanger; the heat exchanger can be used, in particular, in the heat exchange of a strongly corrosive medium under a high temperature, and has a compact structure and high heat exchange efficiency.
F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of rubberPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of plastics materialPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
F28F 17/00 - Removing ice or water from heat-exchange apparatus
7.
Method for preparing sulfuric acid by using hydrogen sulfide
4 product. Also provided is a heat exchanger, comprising a housing and several glass pipes arranged within the housing along the direction of a long axis of the housing, arching between two lateral walls thereof; the adjacent glass pipes are connected head-to-tail. The method provides great hydrogen sulfide removal efficiency, simple process flow, and allows for economic efficiency of apparatus and reasonable utilization of energy.
F28D 1/00 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
F28F 9/10 - Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
F28F 19/00 - Preventing the formation of deposits or corrosion, e.g. by using filters
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of rubberPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of plastics materialPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
patents
