Catacarb process

Catacarb process An extraction process used to remove carbon dioxide from process gases by scrubbing the hot gases with potassium carbonate solution containing additives which increase the hydration rate of the gas in the solution. The Vetrocoke process is similar. See Benfield process. 

Three commercial processes that use these various hot carbonate flow arrangements are the promoted Benfield process, the Catacarb process, and the Giammarco-Vetrocoke process (26—29). Each uses an additive described as a promoter, activator, or catalyst, which increases the rates of absorption and desorption, improves removal efficiency, and reduces the energy requirement. The processes also use corrosion inhibitors, which aHow use of carbon—steel equipment. The Benfield and Catacarb processes do not specify additives. Vetrocoke uses boric acid, glycine, or arsenic trioxide, which is the most effective. 

Ca,surfaces evaluating via effectiveness factor, 25 276-279 Caswellsilverite, 6 4711 Catabolism, herbicide, 13 309 Catacarb process, 4 812 Catalases... 

Catacarb Process [667], [681], [682]. This process was introduced about 30 years ago. A modified potassium salt solution is used, containing various stable and non toxic catalysts and corrosion inhibitors. The process is very versatile and allows the process and mechanical configuration to be tailored to a wide range of C02 partial pressures. Figure 68 showes a Catacarb single-stage low heat design. 

The Catacarb Process uses an additive on the basis of amine borates, whose composition is not disclosed by the licensor. 

Hot Potassium Carbonate (Benfleld) Process, 334 Catacarb Process, 363 Flexsorb HP Process, 369 Giammarco-Vetrocoke Process, 371... 

The Catacarb process, which was disclosed by Eickmeyer (1962), is licensed by Eickmey-er and Associates of Prairie Village, Kansas. For most applications the Catacarb process utilizes a catalyzed hot potassium carbonate solution however, potassium borate solutions are used for the removal of hydrogen sulfide in the absence of carbon dioxide (Gangriwala and Chao, 1985). The solutions contain undisclosed additives that catalyze absorption and desorption of acid gases, particularly carbon dioxide. The additives, which include a corrosion inhibitor, are claimed to have no effect on reformer or methanation catalysts that the purified gas may pass through downstream of the Catacarb absorber (Morse, 1968). 

Figure 5-27. Catacarb process two-stage design. (Gangriwala and Chao, 1985j...

The principal advantages of the Catacarb process are production of higher purity product gas than the uncatalyzed hot potassium carbonate process, consumption of less steam than either the potassium carbonate or monoethanolamine systems, and use of smaller equipment (resulting in 20 to 30% savings in capital investment) than the conventional monoethanolamine process (Morse, 1968). 

Data from the operation of Catacarb process plants in a wide variety of gas treating applications are given in Table 5-8, The data show that the process is capable of providing high efficiency removal of CO2, H2S, COS, and RSH from gas streams. 

Comparison of Hot Potassium Carbonate and Catacarb Process Performance... 

Catacarb Process Operating Experience in a Variety of Acid Gas Removai Appiications... 

Catacarb Process Design Summary for CO2 Removal In a 1000 Std.T/Day NH3 Plant... 

Conventional shift conversion (with low temperature shift guard vessel) carbon dioxide removal with the Catacarb process methanation. 

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