Deep Bed Carbon Full Flow Filtration
Engineered Corrosion Control
100% X-rayed and Stress Relieved Major Vessels
Fisher Pneumatic Controls or DCS Electronic Controls (Customer option)
External Cage Level Controllers
High Efficiency Reboilers
AMINE PROCESS
Amine treating is a proven technology that removes H2S and CO2 from gas and liquid streams through absorption and chemical reaction. Each of the alkanolamines offer distinct advantages to specific treating problems. Dickson & Tryer's amine treating processes include:
MEA Monoethanolamine is generally used in low pressure treating applications and in operations requiring stringent outlet gas specifications. MEA treating provides high reactivity and low solvent cost. It usually requires reclaiming in order to remove degradation products from solution. It is relatively corrosive and it’s solution strength must be kept low (typically <20 wt%).
DGA Diglycolamine is used when there is a need for carbonyl sulfide and mercaptan removal in addition to H2S and CO2 removal from gas and liquid streams. High solution loadings can be achieved by using solution strengths of 50-70%. In addition, DGA is suited for use in cold climates because the solution has a very low freezing point. As with MEA, it is necessary to reclaim DGA to remove degradation products.
DEA Diethanolamine is typically used in medium to high pressure treating. High solution loadings and lower heats of reaction allow for smaller plant sizes and lower operating costs. DEA does not require reclaiming as MEA and DGA do. DEA is moderately corrosive allowing solution strengths up to 30 wt%.
MDEA Methyldiethanolamine has a higher affinity for H2S than CO2. Depending on operating pressure and composition, the selective absorption of H2S can reduce the costs of utilities and equipment as well as provide enriched acid gas concentrations for feeds to sulfur recovery units. MDEA is relatively non-corrosive allowing solution concentrations of 50 wt% typically.
FORMULATED (SPECIALTY) SOLVENTS A variety of blended or specialty solvents are available on the market. Offered by such companies as Dow (Gas Spec), Union Carbide (Ucarsol) and Huntsman Chemical. These specialty solvents often offer reduced circulation, reduced fuel consumption, and reduced plant initial cost when compared to the above conventional amines. Specialty solvents are combined with physical solvents when mercaptan removal is required.
CUSTOM DESIGNED PLANTS or STANDARD DESIGN
Dickson & Tryer custom designs skid mounted amine plants up 1000 GPM or can utilize our standard design packages. We will gladly simulate your process conditions and recommend the best process to treat your specific gas conditions. Dickson & Tryer amine plants are designed for flexible turn-up/turn-down to allow for varying gas conditions, reliability, and ease of operation. A copy of our standard specifications for amine treating systems is available upon request.
TYPICAL AMINE PLANT
STANDARD FEATURES
100% Pump Sparing
ASME Section VIII, Div. 1
Code Vessels
Shell and Tube or Plate Frame Heat Exchangers (Customer option)
ASME/ANSI B31.3 Code Piping
Total Custom Electrical Systems and Instrumentation
Deep Bed Carbon Full Flow Filtration
Engineered Corrosion Control
100% X-rayed and Stress Relieved Major Vessels
Fisher Pneumatic Controls or DCS Electronic Controls (Customer option)
External Cage Level Controllers
High Efficiency Reboilers
