Fluid purification system and method for fluid purification

Abstract

The present invention relates to a fluid purification system. The fluid purification system comprises a regenerative thermal oxidation device (RTO device) with a first combustion chamber and at least one regenerator. The RTO device is configured to purify a first fluid flow by means of regenerative thermal oxidation. Furthermore, the fluid purification system comprises a second combustion chamber separate from the RTO device, which is configured to purify a second fluid flow different from the first fluid flow by means of thermal oxidation. The fluid purification system further comprises a heat transport device configured to transport process heat from the RTO device to the second combustion chamber to set a temperature in the second combustion chamber.

1 . A fluid purification system comprising:
 a regenerative thermal oxidation device with a first combustion chamber and at least one regenerator, wherein the regenerative thermal oxidation device is configured to purify a first fluid flow by means of regenerative thermal oxidation and emit a first flue gas flow;   a second combustion chamber separate from the regenerative thermal oxidation device which is configured to purify a second fluid flow different from the first fluid flow by means of thermal oxidation and emit a second flue gas flow, wherein the second flue gas flow is discharged from the fluid purification system past the regenerative thermal oxidation device; and   a heat transport device configured to transport process heat from the regenerative thermal oxidation device to the second combustion chamber to set a temperature in the second combustion chamber.   
     
     
         2 . The fluid purification system according to  claim 1 , wherein the temperature in the second combustion chamber is set at least substantially passively, in particular exclusively passively, via the process heat transported from the regenerative thermal oxidation device to the second combustion chamber. 
     
     
         3 . The fluid purification system according to  claim 1 , wherein the heat transport device is configured to dissipate the process heat from the regenerative thermal oxidation device only after a predetermined temperature has been reached in the first combustion chamber. 
     
     
         4 . The fluid purification system according to  claim 1 , further comprising a fluid supply device for the first fluid flow, which is configured to supply the first fluid flow to the regenerative thermal oxidation device only after a first predetermined temperature has been reached in the first combustion chamber. 
     
     
         5 . The fluid purification system according to  claim 1 , further comprising a fluid supply device for the first fluid flow, which is configured to supply the second fluid flow to the second combustion chamber only after a second predetermined temperature has been reached in the second combustion chamber. 
     
     
         6 . The fluid purification system according to  claim 1 , wherein the heat transport device is configured to transport the process heat in the form of flue gas from the regenerative thermal oxidation device to the second combustion chamber, and wherein the flue gas flows through the second combustion chamber to set the temperature in the second combustion chamber. 
     
     
         7 . The fluid purification system according to  claim 6 , wherein the heat transport device is configured to set a volume flow of the flue gas transported from the regenerative thermal oxidation device to the second combustion chamber depending on the temperature in the second combustion chamber and/or a predetermined range of values to which the temperature in the second combustion chamber is to be set. 
     
     
         8 . The fluid purification system according to  claim 6 , wherein the heat transport device is configured to dissipate the flue gas from the first combustion chamber of the regenerative thermal oxidation device and/or from a bypass of the regenerative thermal oxidation device, and wherein the bypass is configured to route a part of the flue gas past the at least one regenerator of the regenerative thermal oxidation device in a controlled manner. 
     
     
         9 . The fluid purification system according to  claim 6 , wherein the bypass is configured to route the part of the flue gas past the at least one regenerator of the regenerative thermal oxidation device during an over-autothermal operation of the regenerative thermal oxidation device. 
     
     
         10 . The fluid purification system according to  claim 1 , wherein the regenerative thermal oxidation device further comprises at least one burner configured to burn an additional fuel in a controlled manner in order to set a temperature in the first combustion chamber. 
     
     
         11 . The fluid purification system according to  claim 10 , wherein the at least one burner is configured to burn the additional fuel during heating of the regenerative thermal oxidation device to set the temperature in the first combustion chamber to a predetermined range of values, wherein the regenerative thermal oxidation device comprises at least one outlet for dissipating flue gas, wherein the at least one regenerator is arranged between the at least one outlet and the first combustion chamber, and wherein the at least one outlet is configured to generate a volume flow of the flue gas through the at least one regenerator for warming up the at least one regenerator after setting the temperature in the first combustion chamber to the predetermined range of values. 
     
     
         12 . The fluid purification system according to  claim 1 , further comprising:
 a first combustion air supply device configured to feed first combustion air into the first combustion chamber in a controlled manner; and/or   a second combustion air supply device configured to feed second combustion air into the second combustion chamber in a controlled manner.   
     
     
         13 . The fluid purification system according to  claim 1 , further comprising an induced draft coupled to both the regenerative thermal oxidation device and the second combustion chamber and configured to generate at least the first flue gas flow from the regenerative thermal oxidation device and the second flue gas flow from the second combustion chamber to the induced draft. 
     
     
         14 . The fluid purification system according to  claim 13 , further comprising a fresh air supply device arranged between the induced draft and both the regenerative thermal oxidation device and the second combustion chamber and configured to supply fresh air to at least one of the first flue gas flow and the second flue gas flow in a controlled manner depending on the temperature thereof. 
     
     
         15 . The fluid purification system according to  claim 1 , wherein the second fluid flow has a higher calorific value than the first fluid flow and/or wherein a pollutant concentration in the second fluid flow is higher than in the first fluid flow and/or wherein a volume flow of the second fluid flow is lower than a volume flow of the first fluid flow and/or wherein the second fluid flow contains at least one corrosive substance, one polluting substance and/or one substance damaging the at least one regenerator. 
     
     
         16 . A method for fluid purification comprising:
 regenerative thermal oxidation of a first fluid flow in a regenerative thermal oxidation device with a first combustion chamber and at least one regenerator,   wherein the regenerative thermal oxidation device emits a first flue gas flow;   thermal oxidation of a second fluid flow in a second combustion chamber separate from the regenerative thermal oxidation device, the second fluid flow being different from the first fluid flow, wherein the second combustion chamber emits a second flue gas flow, and wherein the second flue gas flow is discharged from the fluid purification system past the regenerative thermal oxidation device; and   setting a temperature in the second combustion chamber by means of process heat transported from the regenerative thermal oxidation device to the second combustion chamber.   
     
     
         17 . The method according to  claim 16 , wherein the temperature in the second combustion chamber is at least substantially passively, in particular exclusively passively, set by means of the process heat transported from the regenerative thermal oxidation device to the second combustion chamber. 
     
     
         18 . The method according to  claim 16 , wherein the process heat is transported from the regenerative thermal oxidation device to the second combustion chamber only after a predetermined temperature has been reached in the first combustion chamber. 
     
     
         19 . The method according to  claim 16 , further comprising:
 supplying the first fluid flow to the regenerative thermal oxidation device only after a first predetermined temperature has been reached in the first combustion chamber; and/or   supplying the second fluid flow to the second combustion chamber only after a second predetermined temperature has been reached in the second combustion chamber.   
     
     
         20 . The method according to  claim 16 , wherein setting the temperature in the second combustion chamber by means of process heat comprises:
 transporting flue gas from the regenerative thermal oxidation device to the second combustion chamber,   flowing flue gas through the second combustion chamber to set the temperature in the second combustion chamber.