240 TPD Formaldehyde Plant

Transcription

1 240 TPD Formaldehyde Plant Please click on our logo or any link in this presentation to be redirected to our website, or other documentation. Thank You! 17A Marlen Drive Hamilton, NJ USA Tel: (609) Fax: (609)

2 Formaldehyde Overview Overview Summary: In this plant, formaldehyde is produced by the oxidation of Methanol. Utilizing a catalyst Fe-MO supported by ceramic. The oxygen is fed by using a blower (VV 701) taking part fresh air and part exhaust gases from the outlet of the absorbtion column (C 701) in order to reach the oxygen concentration of the methanol LEL. The concentration is detected continuously by an oxygen analyzer on line. The gas is fed in the methanol evaporator (E 701) where liquid methanol is added through spray nozzles and evaporated using the heat of the solution taken from a section of the column. The reaction mixture is fed in (F 701) where it is heated up by gases from the reactors, then goes in the reactors from bottom to top. The reaction is exothermic and the heat is removed using diathermic oil circulated in each of the seven reactors.

3 Formaldehyde Overview Overview Summary continued : The gas from the reactors is composed of formaldehyde, oxygen, nitrogen and methanol and goes to the absorption column from bottom to top. The column is divided in three main sections where the solution is circulated by pumps and the third section is cooled with a plate heat exchanger (F 703). From the bottom of the column, the formaldehyde solution % is sent to the storage tank. The heat of the diathermic oil is removed in a boiler (H 701) which produces steam at 17 bar-g. The water to produce steam is fed by a pump. To start the plant before feeding the gas to the reactors, the reactors have to be heated to the temperature of reaction. This is accomplished by circulating the oil in a burner (B 701) working with natural gas.

4 Electroblowers VV701 T.O.S.I.-Legnano Service: Gas Circulation Type: DF 91 Number: 5043 P asp : P mand : ata 1.47 ata Range: 61,000 m 3 /h

5 Pre-Evaporator E701 Alfa-Laval France Service: Methanol Evaporation Thermal Recovery Proj. Condition: Methanol + Air Internal Side P= 0.5 bar Temp.= 99 C Capacity: 2,650 lt Mat.: 304SS Change Area: 372 m 2 Proj. Condition: Formaldehyde Solution External Side P= 5 bar Temp.= 99 C Capacity: 1,700 lt

6 Recovery F701 Sartori Service: Air Methanol Mixture Heating Reacted Gas Cooling Thermal Recovery Proj. Condition: Reacted Gas Tube Side P= 0.5 ate Temp.= 310 C Capacity: 5.4 m 3 Material: Stainless Steel Proj. Condition: Methanol + Air Mantel Side P= 0.17 ate Temp.= 200 C Capacity: 7.6 m 3

7 Reactors A701/A702/A703/A704/A705/A706/A707 COSM Service: Air Methanol Mixture Heating Reacted Gas Cooling Thermal Recovery Proj. Condition: Methanol + Air Tube Side P= 0.17 ate Temp.= 350 C Capacity: 1 m 3 Material: Stainless Steel Proj. Condition: Diathermic Oil Mantel Side P= 0.6 ate Temp.= 310 C Capacity: 1.34 m 3 Material: Carbon Steel

8 RPM Multiplier Entries: Proj. Condition: Internal Dia.: Material: OLSA 7 th and 11 th plate, demineralized water or aldeic waters from acted gas bottom P= 49,035 Pa (gauge) Temp. = 350 C 4,400 mm; Length: 25mt SS CS Made of 3 ring packed sections (TC1, TC2, TC3) and a fourth section with 11 perforated plates - Liquid recirculation on the 3 packed sections

9 Boiler H701 Service: Proj. Condition: Tube Side Proj. Condition: Mantle Side SAICI Milan Diathermic oil cooling Thermal recovery with M.P. vapor production Diathermic Oil P= 1.3 ate Temp. = 310 C Total Capacity: 5.4 m 3 Material: Stainless Steel Water - Vapor P= 4 bar Temp. = 216 C Material: Carbon Steel

10 PC 701 (PC701R) Gabbioneta Number: Capacity: 500 m 3 /h Head: 16.5m Temperature: C Mechanical Seal: Suction Diameter 250mm Discharge Dia. 200mm Electric Motor: 960 rpm/min, 47.5 Hp, 500V 50 Hz, 53 A

11 Centrifugal Pump PC702 Aturia Number: Service: Capacity: 6 m 3 /h Head: Temperature: 20 C Mechanical Seal: Suction Diameter 50mm Discharge Dia. 200mm Electric Motor: Demineralized water dispatch to boiler H m T.I.B.B. 2,900 rpm/min, 7.5 Kw, 500V, 50 Hz, 53 A

12 Centrifugal Pump PC703 (PC703R) Gabbioneta Number: 58837/8 Service: Formaldehyde solution dispatch from column 701 to tank SR20 Capacity: m 3 /h Head: Temperature: m C Mechanical Seal: Suction Diameter 250mm Discharging Dia. 200mm Electric Motor: 1,460 rpm/min, 45.5 Hp, 500V, 50 Hz, 7 A

13 Centrifugal Pump PC704 (PC704R), PC705 (PC705R), PC706 (PC706R) Gabbioneta Number: 59412/59424/59423 Service: Formaldehyde solution recirculation in column C701 Capacity: m 3 /h Head: Temperature: m C Mechanical Seal: Suction Diameter 250mm Discharge Dia. 200mm Electric Motor: 1,460 rpm/min, 45.5 Hp, 500V, 50 Hz, 49 A

14 Diathermic Oil Heater B701 Service: Capacity: Opt. Included: Total Power: 10.3 kw Min. Gas Pressure: 1.5 bar Standard and Kessel, Type HoKv 700 Diathermic oil heater 600,000 kcal/h Oil re-circulating pump, control panel, gas regulating station

15 Oxygen Analyzer Type: Siemens Oxymat 5F

16 Plate Heat Exchanger F703 Alfa Laval Service: Plate Heat Exchanger (3 rd column section) Type: Material: A-HBM Stainless Steel Surface: 270 m 2 No. of Plates: 223

17 MeOH Feeding Regulation P711 Service: Hermetic Pumpen Capacity: CAM 25/6 MeOH feeding pump Opt. Included: 9.2 kw Total Power: min. 2 m 3 /h max. 10 m 3 /h Min. Gas Pressure: min. flow 148m max. flow 138m Many spare parts are available at this plant

18 Block Diagram

19 Contact Information MICHAEL JOACHIM DIRECTOR, PLANTS DEPT. Tele: (direct) Mobile: SANJEEV REGE VP GLOBAL PLANT SALES Tele: (direct) Mobile: