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1 OPTIMIZED INTEGRAL Flue Gas Cleaning System SPECO LTD.
2 SUMMARY BUSINESS FIELDS BRIEF HISTORY
3 To solve the problems related to the removal of pollutants such as Dioxins/Furans, Nitrogen Oxides, Dust and Heavy metals and of Acid Gases, SPECO has developed a complete range of reductoin/oxidation or adsorption, adsorption /neutralization and filtration processes which provide the best answer to the various air quality control requirements. AIR & GAS QUALITY CONTROL PROCESS Selection Index Flue Gas Treatment System
4 DRY & SEMI-DRY PROCESS Dry Process The dry process involves not only filtration but also injection of a reagent in powder into the gas stream to be scrubbed. Anti-corrosion cooler Lime Particle conditioner Fabric filter Clean gas No water is used or discharged and the stack plume is almost non-existent. Flue gas Residues Fan Industrial boiler Industrial waste incinerator Municipal incinerator Power plant Residue treatment before dischange Semi-Dry Process This process is suitable when acidic gases such as HCl, HF, SOx from incinerator, waste heat boiler cleaning performances are required. Activated carbon is mixed with lime slurry for adsorbing the Dioxins/Furans and various other residual pollutants, in particular gaseous heavy metals such as mercury. Lime Clean gas No water discharge as the spray water vaporizes in reactor Fabric filter Flue gas Reactor Residues Fan Industrial boiler Industrial waste incinerator Municipal incinerator Power plant Residue treatment before dischange
5 Semi-dry reactor The inlet reactor tower has been carefully designed to provide an even distribution of gas to each of the flow tubes with minimal pressure drop. The flue gas and reagent spray the exit of flow tubes and begin to expand into the scrubber vessel. Acid gases are converted to neutralized salts and still have a long residence left in the vessel to ensure complete drying of these products. So, there are no internal devices and no horizontal ledges in the hopper area where buildups could occur. Also, the outlet has been designed so that as the gas is accelerated back to the dust carrying velocities, the velocities will remain sufficiently high as to prevent fallout of particulate in the outlet area of the scrubber vessel. Nozzle Slurry Liquid Inlet Orifice Compressed air Air lnlet Orifice Target Bolt Reduced Orifice Key Slurry steam impingement on a target bolt causes quick, effective tearing of the liquid into filaments and large droplets. High-velocity air creates high shear forces on the droplets, breaking them into smaller droplets. A reduced-opening orifice generates additional shearing to reduce mean droplet size. Holes in nozzle tip shape the spray and provide a sharp cut off on maximum droplet size. Orifice Atomization Nozzle Tip Key Advantages A complete lance / nozzle assembly can be changed in less than 5 minutes during plant operation. Routine cleaning of the nozzle and lance is accomplished with the nozzle in place. Shield air protects the compressed air and slurry lines. Quick disconnects are provided for each hookup to the lance assembly. Correct alignment of the spray nozzle in the gas flow tube is ensured.
6 WET PROCESS Wet Process The wet process involves gas GRANILAB scrubbing which leads to the saturation temperature and to the Absorption of acid gases such as HCl, HF, SOx by scrubber with using lime and / or soda. Fine particles including heavy metals and mist are additionally collected in Electro-filtering-Module(EFM), to produce a cake containing stabilized heavy metals and clear water which can be discharged to the environment. This process give excellent results, irrespective of the fluctuation or quantity of pollutants entering the system the amount of reagent used is close to stoichiometric ideal. The quantity of residues to be disposed of is low and additional treatment is fairly simple. Flue gas Ash Treatment reagents Electrostatic precipitator Lime Cake GRANILAB Scrubber Fan Clean gas Electro filtering Venturi Clean Treatment Industrial boiler Industrial waste incinerator Municipal incinerator Power plant Additional Lime GRANILAB Scrubber Clean gas Flue gas Electrostatic precipitator Fabric filter Ash Residue treatment before dischange Reactor Residues Residue treatment before dischange Clean Cake Treatment Fan Additional
7 Edv series The EDV system consist of GRANILAB spray towers comblined with FILTERING and / or ELECTRO-FILTERING VENTURI MODULES They include a number of technological innovations, which allow the systems to meet even the most stringent air quality control requirements. Nozzle The nozzle are designed to handle concentrated slurries without clogging, scaling, abrasion and corrosion. Droplet size is design variable of nozzle technology. The closely controlled droplet sizing is essential for optimum particulate removal and acid gas absorption. These technological advantages form a deciding factor for the end-user, since they allow large quantities of dust and pollutants to be captured without clogging and require very little fresh water due to a high recycling rate in the scrubbing loops. Electro-filtering Venturi It fitted with a dynamic precipitation electrode consisting in a curtain of electrically charge water droplets sprayed in counter flow pattern. Its efficiency is independent of size distribution and electrical properties of the particles to be captured. EDV 1000 EDV 2000 EDV 5000 EDV 6000 EDV 7000 EDV 8000 EDV 9000 G1 G1+G2 G1+G2+M1+Cyclolab G1+G2+special module M1+Cyclolab G1+G2+M2 G1+G2+M1+M2 G1+G2+M1+special module M2
8 SCR & SNCR PROCESS SCR process SCR (Selective Catalytic reduction)system, using the catalyst removal not only NOx but also Dioxin & Furan in Flue gas at same time, as very nice efficiency. Injecting ammonia upstream from the reactor reduces nitrogen oxides. The reaction is almost efficient at flue gas temperature between 200 and 300 on successive layears of catalyst lining the reactor. Lime Flue gas Reactor Fabric filter Residue treatment before dischange Duct burner SGH Ammonia GGH Fan Clean gas High removal efficency Simultaneous removal of NOx/Dioxin & Furan Industrial waste incinerator Municipal incinerator Nitric Acid plant Industrial boile Power plant SNCR process The SNCR(Selective Non Catalytic reduction) Process consists of injecting a reagent at the furnace outlet to reduce the nitrogen oxides at a temperature of 900 to 1100 SNCR main facility consists of Urea Supply facility for supplying Urea and Spray Nozzles for injecting Urea into the point with appropriate temperature. DeNOx reagents (Urea) NOx removal without catalyst Low cost for erection/operation Furnace GAS cleaning Industrial waste incinerator Municipal incinerator Nitric Acid plant Industrial boile Power plant
9 Scr reactor NH +AIR Gsa/Oil fired induct burner Catalyst NOx/Dioxin is reduced to N 2 on catalyst surface contacting with Ammonia injected through spray nozzles. SCR main facility consists of Reheating facility for increasing the appropriate temperature of flue gas, Catalyst Reactor and Ammonia Supply facility. Gsa/gas heater SGH stack Catalyst The optimum support for the removal of NOx and Dioxin in the presence of NH3 is a mixture of Titanium Oxide (TiO 2 and tungsten Oxide (WO 3). The active component consists of Vanadium Pentoxide (V 2O 5) In order to meet the requirements regarding pressure drop, fouling behavior and cost, honeycomb geometry catalyst is designed to use.
10 Removal & destruction process of dioxins & furans In order to meet the specific needs of each type of facility most efficiently and economically, there are four different dioxin and furan emission control processes. Among these processes, two in particular enable the combined collection and destruction of dioxins and furans. Experience gained from their applications since Stack emission guarantee of less than 0.1ng-TEQ/Nm (Expected value : 0.01ng-TEQ/Nm) Industrial waste incinerator Municipal incinerator Chemical plant Nitric Acid plant Reagent Activated carbon Reagent Reagent Activated carbon Flue gas Residues Fly ash Bleed Ammonia Reagent Activated carbon GAS cleaning Bleed Residues
11 WIDE RANGE OF EQUIPMENT AND SYSTEMS FOR WIDE RANGE OF APPLICATIONS AIR QUALITY CONTROL EQUIPMENT GRANILAB Scrubbers FILTERRING VENTURI ELECROFILTERING VENTURI CYCLOLAB separators Electrostatic precipitator Fabric filters Ultra filtation Mechanical collectors Anti-corrosion coolers Paricle conditioners Dry and semi-dry reactors Catalytic reactors. AIR QUALITY CONTROL PROCESS Filtration Absorption Adsorption Neutralization Reduction/Oxidation Treatment/Recovery of waste APPLICATIONS Power production Incineration of municipal solid and other waste Chemicals, pharmacy, refinery and petro-chemicals Coke palnts Steel works and foundries Non-ferrous metals Glassworks Paper pulp Foodstuffs Cement works Electronics
12 De-dusting system Bag filter The dust-laden air penetrates the filter and sucked inside the bags. This captured dust is blown off the bag and falls into a hopper from which it is evacuated by an appropriate device. MODULAR DESIGN Enabling size of filters to be increased without disturbing the gas flow. COMPACT The flat and horizontal bag with corrugated latticed supports shape give a useful filtration ares about 3 times greater than that of a round fabric bag. A REDUCTION IN OPERATING COSTS DUE TO THE LONG SERVICE LIFE OF BAG No risk of tearing No crumpled bags, no contact between adjacent filter element EASY - MAINTAIN No special tooling Quickly replaced bags : less than 20 seconds to fit a bag Industrial boiler Cement/Grpsum plant Incinerator Iron and steel industry Non ferrous metal industry Power plant Industry Clean air Dust laden air Residues
13 Ultra-filtration The dust-laden air enters at the bottom of the filter and passes through a filter media. Flue gas leaves its particles on the media This capture dust is blow off the bag and is exhausted at top of the filter % on dust particles from 0.3 to 0.5 Guaranteed value on cleaned air 0.001mg/ N Each box is individually checked and approver in a laboratory before delivery The cleaned air is cleaner the surrounding air one usually breathes Re-injecton of the cleaned in workshops Removal of fine particles creating explosive atmospheres Steel industry/smelting plant Fertilizer plant Vegetable wastes incinerator Non ferrous metal industry Filtration Clean air Security box Filter Cleaning OPEN CLOSE Cleaning system Box to be cleaned Cleaning air Dust-Laden air OPEN CLOSE Without Security module Dust With Security module
14 Dryer Paddle dryer Sludge from waste water treatment system contains the moisture content of 75~80%. High moisture sludge will be treated by incinerator. sludge should be dried about 30~40% moisture. Content by sludge dryer in order to save the energy before being supplied inside the incinerator. SPECO supplies the improved and high efficient sludge dryer Small area for installation Simple equipment High thermal efficiency and heat transfer A small carrier air supply and little dust Easy repair, maintenance and operating A waste water disposal plant A sewage disposal plant SLUDGE TANK VENT fresh air STEAM DRYER I.D FAN STEAM DRAIN DRIED SLUDGE
15 Rotary dryer Wet sludge to be supplied in rotary dryer will be dried through hot air inside the rotary drum. Drum rotates slow continuously. Blade of shaft located in drum crushes and scatters the sludge. Moisture of sludge is vaporized. Rotary dryer is designed to hold the sludge long time inside the drum. SPECOs dryer is improved in drying efficiency and its life time. Feather Small area for installation Large drying capacity High heat efficiency and heat transfer Fast dry velocity Small and unified particle size of sludge High heat efficiency using by hot air (700~750) Easy repair, maintenance and operating A waste water disposal plant A sewage disposal plant I.D FAN SLUDGE CYCLONE1 CYCLONE2 ROTARY DRYER BAG FILTER DRIED SLUDGE
16 Plant & Environment SPECO LTD. HEAD OFFICE Samick Music Plaza Bldg 3F, #58-3 NonHyun-Dong, KangNam-Gu, Seoul, KOREA TEL , FAX specoev@speco.co.kr/ Website : FACTORY #1-6, Daejang-ri, Soi-myun, Eumsung-kun, Chungchongbuk-do, Korea TEL : , FAX : CHINA Room No. 1004, China enterprise tower complex, No. 2, Hushan Road, Shanghai City, China specosh@sh163.net, Tel : / , Fax : U.S.A. SPECO,INC Tonne Road Elk Grove Village, il Cell : harry@speco.co.kr 2006/4.17 design by cho
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