Patent ID: 8235305

Claim:
A method for cooling a reaction effluent gas, comprising: a) feeding a sufficient amount of a suitable silicon source cooling gas into a stream of the reaction effluent gas, i) wherein the reaction effluent gas is produced by a thermal decomposition of at least one silicon source gas in a reactor, ii) wherein the stream of the reaction effluent is traveling in a confined area; iii) wherein the suitable silicon source cooling gas comprises at least one chemical species that is present in the reaction effluent gas, and iv) wherein sufficient amount of the suitable silicon source cooling gas is defined based a concentration of the at least one chemical species in the reaction effluent gas; b) cooling the reaction effluent gas to a sufficient temperature so that: i) the rate of the thermal decomposition of the at least one silicon source gas in the stream of the cooled reaction effluent gas is less than 5 percent, and ii) the cooled reaction effluent gas is capable of being handled by a material that is not suitable for handling the reaction effluent gas; and c) wherein the sufficient temperature is temperature range between about 450 degrees Celsius and about 700 degrees Celsius.