Midwest Soil Remediation, Inc.

Transcription

1 Thermal Desorption Unit (TDU) North Kelsey Road Lake Barrington IL USA (800) MSR Unit 945d Midwest Soil Remediation, Inc.

2 An Introduction to MSR 945d Direct Fired System Some of the benefits of 945d include: Guaranteed results Operates on multiple fuel types Processes tons per hour Treats a wide range of contaminants Utilized at industrial, commercial, municipal, and Superfund sites accross the U.S. Introduction to 945d

3 F(847) midwestsoil.com MSR 945d Process Description The MSR 945D Thermal Desorption Unit typically processes between 80 and 120 tons of contaminated soil per hour. The process begins with the placement of contaminated soil in the primary feed hopper via front end loader. All types of soil including clay, sand, silty clay, gravel, and aggregates can be treated. The feed soil immediately passes through a six inch grizzly bar screen that rejects debris and large aggregate before entering the system. After proceeding through additional screens which reduce the soil size for processing, the soil then passes over a dual idler, in-motion weigh scale which has an electronic remote read-out and recorder which logs all soil tonnage entering the process. Soils then travel via slinger conveyor into the systems rotary desorber. The rotary desorber elevates soil temperature to a level necessary to convert contaminants, into a vapor state for removal by way of an exhaust gas stream. The rotary desorber is equipped with variable speed, slope and temperature control to permit soil retention time to vary from eight to twenty minutes to assure the remediation of contaminants. The high temperature air stream containing the volatilized contaminants as well as any dust picked up from the rotary desorber then travels to the fabric filter baghouse. The dust and particulate fines from the baghouse are recycled to the thermal dust conductor where they are further treated by dwelling with high temperature soil from the rotary desorber in a tumbling motion. The intimate contact of high temperature soil from the rotary desorber with dust and particulates from the baghouse, allows conductive heat transfer to volatilize any remaining contaminants in the dust before exiting the thermal dust conductor. The volatilized contaminates are ducted back into the combustion zone for elimination. The fabric filter baghouse is equipped with filter bags that trap dust as the gas stream is drawn inside by an exhaust fan. As dust is trapped on the outside of the bags, the particulate free air exits the unit from inside the bags and is directed to the thermal oxidizer. The thermal oxidizer receives the dust free air stream from the baghouse and elevates the gas to between 1,400 F and 1,800 F in order to destroy organic compounds contained within the gas stream at an efficiency rate exceeding 99%. cooler, which lowers soil temperatures and rehydrates the soil with water sprayed from high pressure jets. The cool, rehydrated soil exits the conditioner/cooler by gravity and is deposited on a stacking conveyor for stockpiling. Upon completion of laboratory testing to confirm the removal of all VOC's to below the project clean-up objectives, the soil is ready for reuse. Treated soil is commonly placed into the original excavation as backfill to fulfill closure requirements and the treated soil can be compacted to a density above 95%. Soil exiting the thermal dust conductor enters into the soil 945d Process Description

4 EXHAUST STACK PARTICULATE FREE GAS THERMAL OXIDIZER BAGHOUSE SYSTEM FAN BAGHOUSE AUGER VAPORIZED CONTAMINATES AND PARTICULATE LADEN GAS STREAM FINES COLLECTED IN BAGHOUSE FEED HOPPER ROTARY DESORBER SCREENS SLINGER CONVEYOR STEAM FROM SOIL QUENCHING TREATMENT TEMPERATURE TRACE VOLATILES WATER SOIL COOLER DUST CONDUCTOR DISCHARGE CONVEYORS PROJECT TITLE MSR 945D BLOCK FLOW Midwest Soil Remediation, Inc. (800) DATE JOB NO. DRAWN October 22, 2008 SHEET SCALE FILE As Shown

5 140' TREATED SOIL FEED BIN FEED CONVEYOR SCREEN SCREEN SCREEN CONVEYOR SCALE CONVEYOR THERMAL DESORBER ENERGY CENTER DUST CONDUCTOR SOIL COOLER 100' GEN-SET RADIAL STACKER BAGHOUSE THERMAL OXIDIZER STACK SUPPLY TRAILER CONTROL ROOM PROJECT TITLE MSR 945D GENERAL ARRANGEMENT Midwest Soil Remediation, Inc. (800) DATE JOB NO. DRAWN October 22, 2008 SHEET SCALE FILE As Shown

6 Project Summary 2095 Sweden-3 Chapman Site - New York Superfund Site Description The Sweden-3 Chapman Site was an old construction and demolition dump, where many drums were illegally dumped. A total of 2,383 drums were removed from the site. Project Description The scope of work included Low Temperature Thermal Desorption (LTTD) of approximately 36,000 tons of contaminated soils utilizing MSR Unit 945d. A treatment plant was coupled with site dewatering operations that supplemented the LTTD unit water requirements for soil re-hydration. The unit maintained a permit constrained production rate of 60 tons per hour throughout treatment operations. Contaminants and Treatment Standards Contaminant Treatment Standards (ppb) Acetone Butanone 405 Trichloroethene 1,134 4-Methyl-2-Pentanone 1,710 1,1,1-Trichloroethane (TCA) Toluene 3, Chlorinated VOC s Project Summary 2095

7 Project Summary 2075 Fort Lewis Army Base Project Site Description The Solvent Refined Coal Pilot Plant (SRCPP) reportedly operated from 1974 until its closure in 1981 as a production/research facility designed to develop a solvent extraction petroleum hydrocarbon products from coal. More recently, jet fuel, fuel oils and waste oils were stored in a tank farm. By-products of the solvent extraction process included solid and liquid wastes. Heat extraction and cracking activities are associated with the production of creosote-like compounds and Polynuclear Aromatic Hydrocarbons (PAH s) Project Description The scope of work included Low Temperature Thermal Desorption (LTTD) of approximately 107,000 tons of primarily PAH contaminated soil excavated from the former Solvent Refined Coal Pilot Plant located at the Fort Lewis Army Base, Tacoma WA. Production averaged 100 tons per hour for the duration of treatment operations. Clean-up objectives were achieved to less than 1mg/kg total PAH s. MSR Unit 945d Contaminants and Treatment Standards Feed Concentration Treatment Standard Contaminant (ppm) (ppm) Carcinogenic PAH s 10 to 1,700 <1 PAH s Project Summary 2075

8 Project Summary 2062 LTTD of PAH s for the State of Illinois Site Description The State of Illinois had operated the site since 1912 as an institution for the mentally ill. The site contained a variety of buildings to service and support the institution including a powerhouse, hospital, food service buildings and vehicle maintenance garage. In 1991, an environmental site assessment was conducted to assess the impact from a 1984 underground piping product release from a 150,000 gallon above ground storage tank, the conditions of the property, and potential off-site impacts. Project Description The scope of work included Low Temperature Thermal Desorption (LTTD) of approximately 22,000 tons of primarily petroleum hydrocarbon/pah contaminated soil to below clean-up objectives. The unit maintained an average production rate of 90 tons per hour for the duration of treatment operations. Contaminants and Treatment Standards Contaminant Treatment Standard (ppm) Benzo(a)anthracene <0.6 Benzo(a)pyrene <0.01 Benzo(k)fluoranthene <0.01 Chrysene Indeno (1,2,3-cd) pyrene <0.1 <0.02 PAH s Project Summary 2062

9 Project Summary 2024 Chanute Air Force Base In 1917, Chanute Field was constructed adjacent to the Village of Rantoul, IL. Chanute Field initially served as a pilot training facility and storage depot for aircraft engines and paint. Between 1921 and 1922, mechanical, photographic, and communications training activities were transferred from other installations to Chanute Field. From 1922 to 1938 Chanute Field served as a technical school for Air Corps mechanics. In 1941, the Air Corps Technical Training command had its first headquarters at Chanute Field. During World War II, training included several areas, such as aircraft maintenance, weather observation, life support, and metal processing. After WWII, Chanute AFB served as a training installation for aerospace and weapon system support personnel. Pursuant to the Base Realignment and Closure Act (BRAC) of 1988, Chanute AFB was selected for closure. The base was closed on September 30, Project Description The scope of work included Low Temperature Thermal Desorption (LTTD) of approximately 43,000 cubic yards (70,000 tons) of petroleum contaminated soils (leaded and unleaded gasoline, fuel oil, JP-4 jet fuel, aviation fuel, kerosene, diesel fuel, heating oil, and fuel tank sludge) which was removed from leaking underground storage tank sites located on Chanute Air Force Base. Contaminates and Treatment Standards The unit maintained a production Organic Concentration Range Treatment Standard rate of 90 tons per hour throughout Contaminant (ppm) (ppb) treatment operations. BTEX 100 to 5, Benzo(a)anthracene 1 to 1, Benzo(a)pyrene 1 to 1, Benzo(k)fluoranthene 1 to 1, Chrysene 1 to 1, Indeno (1,2,3-cd) pyrene 1 to 1, PAH s Project Summary 2024

10 195i Component Specifications MSR Unit 945d Component Specifications Rotary Thermal Desorber Drum Maximum Process Rate 120 Tons per Hour Average Process Rate Ton per Hour Dryer Size...9 I.D. x 43 5 Long Dryer Drive-Variable Speed to 3 RPM Soil Dwell Time...8 to 30 Min. Maximum Soil Discharge Temperature 1,000 F Dryer Slope Per Foot Average Dryer Speed.3 RPM Exhaust Gas Exit Temperature 450 F Ave. Exhaust Gas Volume at 500 F 45,000 ACFM Roto-Aire Fabric Filter Baghouse Baghouse Size 48,000 F Number of Bags 720 Air to Cloth Ratio 4:1 Gas Inlet Temperature Max F Continuous Cleaning..Roto-Step System Pressure Drop (Avg.)... 4 W.C. Thermal Oxidizer Operating Temperature 1,400 1,800 F Shell Material Carbon Steel Outside Diameter.10 O.D. Inside Diameter (I.D. Refractory)..8 6 I.D. Exhaust Gas Volume 100, ,000 ACFM Oxidizer Refractory Type..2,400 F - 9" Pyroblock Midwest Soil Remediation, Inc.