Ceramic Filter Elements for Hot Gas Filtration - PowerPoint PPT Presentation

Ceramic Filter Elements for Hot Gas Filtration 富 利 康 科 技 股 份 有 限 公 司 富利康科技股份有限公司 CLEAN AIR TECHNOLOGY LIMITED

About FLKCAT Ltd  A new company entering the air pollution control sector  Aim to supply the best technologies for monitoring and controlling air pollution  Operating globally  Experienced personal – proven technologies  Technical partnerships – commercial strength  Speciality is ceramic filters with integrated catalysts 2

Air pollution control  Technology used to control emissions from industrial sites to atmosphere for over 100 years  Particulate control market dominated by electrostatic precipitators and fabric filters  Others include cyclones, scrubbers, metal filters and ceramic filters – specialist techniques for specialist applications  Our area of speciality and the subject of today’s presentation is ceramic filters with integrated catalysts for industrial air pollution control 3

What are ceramic filters?  Many types of ceramic products used for filtration  Honeycomb filters – engines  Dense ceramics used in high pressure high temperature applications  We are focussing on products made with ceramic or mineral fibres – formed into tubes/candles  Compatible with standard bag filter design concepts  Good with “high” dust duties 4

FLKCAT Ceramic Filter Products 5

Ceramic filter features  Highly porous  One piece construction  High Efficiency particulate removal  Chemically almost inert  High temperature resistance  Longest product 3 meters long  Rigid otherwise works like a fabric bag  Used with a sorbent can remove acid gases such as SOx and HCl  Combined with a catalyst can remove pollutants such as NOx and dioxins 6

Dust removal  Some particulate penetrates the surface and acts as a barrier to further dust penetration  Dust accumulates on the surface and is removed by cleaning pulses  Non-blinding  High efficiency 7

Acid gas removal  Sorbent such as hydrated lime Ca(OH) 2 added as particulate to gas stream  Sorbent accumulates on the filter element surface  Pollutants such as SOx and HCl must pass through dust cake, and are neutralised by sorbent  Spent sorbent is removed by cleaning pulses 8

Catalyst filter for DeNOx  Catalyst distributed throughout filter element structure  Ammonia added to gas stream to remove NOx  Pollutants must pass through filter and, in doing so, come into contact with the catalyst  NOx and dioxins are converted into harmless products, such as nitrogen and water 9

Advantages – eliminates catalyst failure modes  Catalyst is protected against the poisons such as As Se Na and K because dust stays on filter surface  Catalyst is protected against dust blockage and blinding  Catalyst life is extended >5 years expected  Catalyst evenly distributed 10

Filter properties recap Features Benefits  Ceramic composition Chemically inert with HF only known hazard  Maximum temperature of operation 900 o C  Filter made from ceramic The use of fibres gives the best balance of high efficiency and resistance to flow fibres  Rigid filter element A support cage is not required  A surface dust layer provides high efficiency dust removal. Less than 2 mg/Nm 3 is typical.  Non-blinding due to the surface dust layer, which gives long product life. 5 years and over is not untypical.  Small fibre diameter and surface dust layer ensures that even submicron particulates are captured.  The use of a sorbent gives an excellent bed for acid gas removal. High removal efficiencies can be obtained at higher temperatures of operation, with greater than 90% efficiencies readily achievable.  Manufactured in one piece No weak points such as bag stitching seams  Tubular shape Compatible with standard bag house designs  Catalyst embedded into Catalyst has high conversion efficiency for NOx and organic compounds  Optimal operation temperature of 350 o c the filter element  Filter prevents poisoning of catalyst  Filter prevents masking of catalyst by dust particles  No chemical reaction between catalyst and ceramic filter  Nano sized catalyst particles present highly active catalyst sites  High performance achieved through no diffusion restriction 11

Performance 12

Technology options ESP SCR 稀釋空氣 DeNox 350 ℃ DeSOx SCR 冷却系統 Bag filter De-Dust Waste Gas 200 ℃ 熱交換系統 Catalyst Ceramic Heat filter recovery 350 ℃ System 13

Ceramic filtration markets  Market driver is Legislation  Incineration – WID  Glass – “Glass BREF”  MACT  Process efficiency gains  Improved product  Hot gas with value – energy recovery  Energy savings 14

Markets  Catalytic ceramic element -  Ceramic element – dust dust, SOx & NOx removal and SOx removal  Incinerators  Glass furnaces  Gasification  Cement  Waste to energy  Diesel engines  Metallurgical  Power generation  Product recovery  Process filtration 15

Glass Market • Proven product offering • Proven benefits • Design refined • Established references • Established networks • Dust SOx and NOx • Market knowledge 16

Advantages  Highest level of efficiency – no visible dust  High temperature capability up to 900 o C with dust filter and up to 350 o C with the catalyst  Multi-functional – removes dust SOx NOx HCl VOCs in one single step in one piece of equipment with excellent efficiency levels  Smaller footprint  Opportunities to save capital cost and operational costs 17

Key product features and benefits  The combination of ceramic filter and deNOx catalyst is a powerful combination  Considerable technical advantages over other technologies  Commercial advantages over other technologies  “Cheaper and better” is possible  Good for dust, SOx and NOx applications  Reliable and high performance  Long life expected  Growing market 18

Conclusions  Proven technology  Hundreds of references  Superior technical performance  Savings possible on capital and operational costs  Known performance  Long life of product  Technical back up from first class team  The ultimate multi-pollutant control technology 19

Glass Factory Right: catalyst ceramic filter applied Left: not applied TSYP ， China ， 2015 20