Process of and apparatus for reheating and conveying a granular heat carrier

Apparatus for reheating and conveying a granular heat carrier, such as sand, using a carrier gas where the heat carrier may be employed for desorption by heating a charged lumpy adsorbent, comprising means for forming a vertically extending cycle loop having a lower end and an upper end with an inlet for introducing the carrier gas into the lower end of the cycle loop for conveying the heat carrier, a first separator located in the uppermost part of the upper end of said cycle loop for receiving the heat carrier and carrier gas and separating the heat carrier and carrier gas, a heater located in said cycle loop below and downstream from said first separator so that the separated heat carrier flows by gravity from said separator to said heater, a desorber located in said cycle loop below and downstream from said heater so that the heated heat carrier flows by gravity into said desorber, said desorber arranged to receive the adsorbent, a second separator located in said cycle loop downwardly from and downstream of said desorber for receiving the heat carrier and adsorbent from said desorber and for separating the heat carrier and adsorbent, and said second separator having an outlet for returning the separated heat carrier to the lower end of said cycle loop for flow to said inlet of said cycle loop for another cycle therethrough.

Process of reheating and conveying a granular heat carrier, such as sand, using a gas where the heat carrier may be employed for desorption by heating a charged lumpy adsorbent, such as activated carbon pellets, comprising a vertically arranged cycle loop, conveying the heat carrier by a carrier gas in the upward direction through the cycle loop into a closed space, separating the heat carrier from the carrier gas in the closed space, flowing the separated heat carrier under the effect of gravity downwardly in the cycle loop and during the gravity feed, in turn, heating the heat carrier, mixing the heated heat carrier and the adsorbent in a desorber, separating the heat carrier from the adsorbent and returning the heat carrier to the point where the carrier gas is introduced for conveying the heat carrier, and conveying the carrier gas removed from the closed space after separating the carrier gas from the heat carrier and directing the separated carrier gas into the cycle loop at the location where the separated heat carrier is heated.

Process of reheating and conveying a granular heat carrier, such as sand, using a gas where the heat carrier may be employed for desorption by heating a charged lumpy adsorbent, such as activated carbon pellets, comprising a vertically arranged cycle loop, conveying the heat carrier by a carrier gas in the upward direction through the cycle loop into a closed space, separating the heat carrier from the carrier gas in the closed space, flowing the separated heat carrier under the effect of gravity downwardly in the cycle loop and during the gravity feed, in turn, heating the heat carrier, mixing the heated heat carrier and the adsorbent in a desorber, separating the heat carrier from the absorbent and returning the heat carrier to the point where the carrier gas is introduced for conveying the heat carrier, and passing a part of the carrier gas in heat transfer relation with the heat carrier at a location downstream from the location where the heat carrier is separated from the adsorbent and conveying the heated carrier gas to the location of heating the separated heat carrier.

Process of reheating and conveying a granular heat carrier, such as sand, using a gas where the heat carrier may be employed for desorption by heating a charged lumpy adsorbent, such as activated carbon pellets, comprising a vertically arranged cycle loop, conveying the heat carrier by a carrier gas in the upward direction through the loop cycle into a closed space, separating the heat carrier from the carrier gas in the closed space, flowing the separated heat carrier under the effect of gravity downwardly in the cycle loop and during the gravity feed, in turn, heating the heat carrier, mixing the heated heat carrier and the adsorbent in a desorber, separating the heat carrier from the adsorbent and returning the heat carrier to the point where the carrier gas is introduced for conveying the heat carrier, and using activated coke as the adsorbent and collecting the fines resulting from the abrasion of the activated coke in the desorber and using the collected fines for heating the heat carrier.

Process of reheating and conveying a granular heat carrier, such as sand, using a gas where the heat carrier may be employed for desorption by heating a charged lump adsorbent, such as activated carbon pellets, comprising a vertically arranged cycle loop, conveying the heat carrier by a carrier gas in the upward direction through the cycle loop into a closed space, separating the heat carrier from the carrier gas in the closed space, flowing the separated heat carrier under the effect of gravity downwardly in the cycle loop and during the gravity feed, in turn, heating the heat carrier, mixing the heated heat carrier and the adsorbent in a desorber, separating the heat carrier from the adsorbent and returning the heat carrier to the point where the carrier gas is introduced for conveying the heat carrier, and circulating the heat carrier in a discontinuous operation through the cycle loop.