OPERATIVITY


- FEASIBILITY STUDIES FOR WASTE TO ENERGY INCINERATION PLANTS

- SUPPLY UNDER T.A.E. OF WASTE TO ENERGY INCINERATION PLANTS

- SUPPLY UNDER T.A.E. OF WASTE TO ENERGY INCINERATION PLANTS FOR SALTY WASTEWATERS WITH   EVAPORATOR

- THERMORIGENERATIVE COMBUSTORS FOR CHLORINATED OFF-GAS

- SUPPLY OF ENGINEERING

- DESIGN OF SPECIAL BURNERS

- DESIGN AND SUPPLY OF ELECTRIC BOARDS (POWER AND AUTOMATION)

- BLANKETING PLANTS FOR INDUSTRIAL WASTE SHREDDERS WITH RISK OF EXPLOSION

- SUPPLY OF TECHNICAL ASSISTANCE TO INDUSTRY


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FEASIBILITY STUDIES FOR WASTE TO ENERGY INCINERATION PLANTS

In most cases, due to complexity of the requested plants and their often prototype nature, C+A is available to carry out a feasibility study, which includes:

  1. Technical specification of the analyses to be carried out on the inputs and results elaboration
  2. Plant sizing extended to all major parts
  3. Basic engineering (thermal and mass balances, P&ID, PFD, Block diagram, Lay-out and sections, etc.)
  4. Cost assessment of every major part of the plant. Evaluation of a ± 15% budgetary price
  5. Financial analysis (computer simulations, calculation of Pay-back, ROI, VAN)

Often the studied plant is then ordered by Customer to C+A. In some cases it remains at the study level.

LINKS (only few examples):

ZAMBON GROUP (Lonigo – VI – Italy) incineration plant for salty wastewaters, with evaporator
VISCOLUBE (Pieve Fissiraga – LO – Italy) waste-to-energy plant
TOFIGH DAROU (Tabriz – Iran) incineration plant for very salty wastewaters, with evaporator
POLIMERI EUROPA ELASTOMERES FRANCE (Champagnier – Genoble – France) incineration plant
Incineration plant for aluminum containing flexible packaging waste


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SUPPLY UNDER T.A.E. OF WASTE TO ENERGY INCINERATION PLANTS

For the turn-key supply of medium-large scale (and complexity) plants, C+A undergoes the scheme of a T.A.E. (Temporary Association of Enterprises).

Partners of T.A.E. usually are Leader Companies in the fields of furnaces, heat recovery boilers and flue gas scrubbing/filtering plants.

Within the T.A.E. C+A plays the role of Engineering Company, including plant automation, site construction work management, and may supply the “hot part” of the plant (i.e. burners, furnace / afterburner). C+A often covers the role of Mandatory Company towards the Customer.

The plants are generally incineration plants of solid, liquid and muddy waste, with heat recovery and “state of the art” flue gas cleaning and filtration plants.

In some cases these plants properly classify as waste-to-energy plants (up to 50 Mwt), for electic energy production (up to ab. 10 Mwe).

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SUPPLY UNDER T.A.E. OF WASTE TO ENERGY INCINERATION PLANTS FOR SALTY WASTEWATERS WITH EVAPORATOR

C+A realizes under T.A.E. (Temporary Association of Enterprises) incineration plants for salty wastewaters produced by the Chemical-Pharmaceutical Industry, that are among the waste of most difficult and costly processing. Conventional incineration plants (direct combustion) utilize large amounts of flame supporting fuel.

The pre-treatment waste evaporation technology allows a substantial saving of fuel, by using a part of the steam that is produced by the heat recovery boiler, to evaporate the water fraction of wastewaters. Under the technical solution of partial evaporation, the plant makes use of a simplified evaporator (a stripper + a one-stage forced recirculation evaporator) and of a single stationary furnace for concentrate burning.

With the deep evaporation option the evaporator is a 3+ stage forced recirculation evaporator, with a 2-phase separation: the slurry phase (salts + water + HB solvents) is processed in a rotary hearth furnace, the BB solvents + water phase is sent to a concentration tower, where the head product (BB solvents with little amount of water) is sent to a stationary furnace and the tail product (water with COD < 5,000 mg/kg) is dispatched to water treatment plant.

Both technical solutions introduce a large saving of supporting fuel and a substantial reduction of the overall CO2 emission, in line with Kyoto Protocol.

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THERMORIGENERATIVE COMBUSTORS FOR CHLORINATED OFF-GAS

Click here to download the PowerPoint presentation

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SUPPLY OF ENGINEERING

Supply of complete ad hoc engineering for incineration plant mechanical and electrical parts and for overall plant automation, including:

•  Basic engineering (for feasibility studies, technical reports for E.I.E. (Environmental Impact Evaluation), etc.
•  Mechanical detail engineering (piping, supports, sustaining and accessing structures, multi-floor metallic     structures, metallic chimineys)
•  Civil works detail engineering
•  Electrical and instrumentation detail engineering
•  Plant automation detail engineering
•  Technical specification of lines, machinery, equipment – outline drawing of equipment
•  Technical specification for mechanical and electrical construction/assembling
•  Procurement
•  Follow up of suppliers – Supervision of construction of main parts
•  Supervision of installation
•  Site construction work management (when required)
•  Plant commissioning
•  Plant start up
•  Technical assistance during plant life-cycle (also by tele-assistance)
•  Plant up-grading and automation

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DESIGN OF SPECIAL BURNERS

C+A's Clients often request the design of ad hoc burners, that are not retrievable on the market as standard equipment, for the combustion (sometimes simultaneous as well) of:

•  High LHV sulphurized and chlorinated off-gas from petrochemicfal plants. Up to 3 air stream burners and with De-NOx steam.

•  Low LHV off-gas, mixed with either air or nitrogen, also sulphurized and chlorinated, with variable content of organic matter (spent solvents, hydrocarbon vapours), to be fed to furnace through steam ejectors or ATEX complying fans under continuous mixture LEL control, or mixed ejector / fan.

•  Liquid waste of chemical-pharmaceutical origin (spent solvents and salty wastewaters, both also sulphurized and chlorinated) and petrochemical (various compounds, also sulphiruzed and chlorinated, heavy hydrocarbon etc.).

•  NG-fired burners for hot postcombustion chambers (afterburners).

•  Special burners for shredded solid waste that is pneumatically fed (for example, chips from variable % aluminum containing flexible packaging waste).


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DESIGN AND SUPPLY OF ELECTRIC BOARDS (POWER AND AUTOMATION)

The electric board is specifically designed according to process type (by C+A or Third Parties) and to relating requirements.

Design and supply of electrical boards include:

  1. BMS panels for burner management
  2. Distribution electric boards
  3. Power and PLC-based automation electric boards ( fail-safe also), for:

•  Incineration plants and waste-to-energy plants for industrial waste (also of dangerous type)

•  Nitrogen blanketed (by C+A technology) industrial shredder

•  Processes and plants of Third Parties

The automated plants may adopt technologies such as FIELDBUS, PROFIBUS and FIBRE OPTICS.


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BLANKETING PLANTS FOR INDUSTRIAL WASTE SHREDDERS WITH RISK OF EXPLOSION

As a part of waste pre-treatment prior to correct combustion, some Customers asked C+A to design a totally-safe technology for industrial waste shredders against the risk of explosion.

C+A has developed a blanketing technology based upon the use of nitrogen (or CO2 or low oxygen fuel combustion gases) for shredders of industrial waste of various type, also dangerous (or toxic).

1) 1 t/h shredder for dangerous industrial waste of solid type, blanketed by nitrogen by C+A’s technology and automation. Supply of shredder by SATRIND S.r.l. – Arluno, Milan – Italy for the waste-to-energy incineration plant of ZAMBON GROUP S.p.A. – Lonigo, Vicenza – Italy (2001).

2) 10 t/h shredder for dangerous industrial waste of solid and muddy type, blanketed by nitrogen by C+A’s technology and automation. Supply of shredder by SATRIND S.r.l. – Arluno, Milan – Italy for ENERGIS S.A. – Albox – Spain, of the HOLCIM GROUP (2004).


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SUPPLY OF TECHNICAL ASSISTANCE TO INDUSTRY

Technical assistance by C+A to industry includes:

  1. Study, for each factory, of the production history for gaseous, liquid, solid and muddy waste, with a preliminary suggestion of the most viable plant configuration and scale.
  2. Elaboration of a proper set of analyses of the input data for a new waste-to-energy incineration plant for gaseous, liquid, solid and muddy waste, or fractions thereof.
  3. Analysis of input – output and of operating parameters of an existing waste-to-energy incineration plant and preliminary engineering service for plant revamping or retrofit .
  4. Specifications and methods for the analyses and results elaboration.
  5. Technical support for plant authorization, including the E.I.A. (Environmental Impact Evaluation) procedure.

Should the Customer find the C+A's preliminary plant solution interesting, the C+A's work usually proceeds with an ad hoc feasibility study.

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