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Waste treatment: Waste Liquid Incineration System

Waste treatment: Waste Liquid Incineration System

Tsukishima Kankyo Engineering Ltd.

Waste Liquid Incineration
System: Submerged Combustion
System for Treating Waste

sukishima Kankyo Engineering’s Waste Liquid Incineration System, also known as Submerged Combustion System treats various liquid forms of waste through incineration. These waste by-products can be discharged from a wide spectrum of production processes pertaining to petrochemical, fine chemical, pharmaceutical, agrochemical, pulp and other industries. The technology can treat these liquid waste without secondary pollution, which is excellent for the environment.

There are many far-reaching and convenient applications of this system. Application includes: Freon destruction method for highly efficient destruction of fluoride-containing waste liquid, waste gas such as CFC or HCFC, and fluorocarbons such as HFC, PFC, SF₆, and NF₃.

Major Features and Advantages

I. Decomposes waste completely
Waste Liquid Incineration System can completely decompose the organic substances in the liquid waste despite the kind or character of the liquid waste.

II. Adaptation of Refractory
A refractory can be adapted according to the specification of the waste liquid, backed by 400 proven experiences.

III. Decreased Operating Costs
In an auxiliary furnace, running costs can be decreased. Because instead of fuel, the ignition of waste water with a lower heating value of 16 MJ / kg is possible with an auxiliary furnace.

IV. Electricity Generation
Heat Recovery is high, as waste heat from the quencher can generate electricity with a max of .300 kW electric power.

V. Discharged Salts are Dissolvable
Incinerator is vertical type, which allows the salts contained in the waste liquid to flow down in the incinerator as they are discharged smoothly and easily upon exit. The discharged salts can then be dissolved in water, making for easier discharge from the system.

VI. Acid Recovery
Hydrochloric acid can be recovered at higher than 30 percent concentration. In Fluorocarbon destruction system, hydrofluoric acid and/or fluorite can be recovered.

Tsukishima Kankyo Engineering exports the main equipment and instruments to plants in which this technology is installed. Local vendors will make non-pressurized vessels and towers, and will also construct and maintain the total incineration system, keeping labor costs local and low.

Technology Data

Conceivable applications

Waste Liquid Incineration System is for treating various liquid wastes discharged from various production processes of petrochemical, fine chemical, pharmaceutical, agrochemical, pulp and other industries without secondary pollution.

There are many possible applications for this system. These applications  include Freon recovery/destruction method for highly efficient destruction of fluoride-containing waste liquid, exhaust gas by-products such as CFC and HCFC, and various fluorocarbons such as HFC, PFC, SF₆, and NF₃.

<Incineration System of waste liquid discharging from ethylene production plant. (in Saudi Arabia)>

<Incineration System of waste gas and liquid discharging from Fluorocarbon production plant. (in Japan)>

Competitive advantage

A) Non Trouble by salts
Incinerators are vertical type. Salts contained in waste liquid flow down in the incinerator and are discharged upon exit of the incinerator easily.
The discharged salts are dissolved in water, and are discharged from this system.

    B) Regulation
    The regulation values of exhaust gas and effluent can be cleared in all countries.

    C) Refractory
    A refractory which is adapted for the property of the waste liquid can be selected, because of approx.400 experiences.

    D) Auxiliary Furnace
    Running costs can be decreased, because instead of fuel, waste water with a lower heating value of 16 MJ / kg can be ignited in an auxiliary furnace.

    E) Heat Recovery
    Waste heat from quencher can generate electricity. Electric Power: max.300 kW

    F) Acid Recover
    – Hydrochloric acid can be recovered at higher than 30% concentration.
    – Fluorite can be recovered.

    G) Technical Support
    Experienced engineers will present proposals concerning economic maintenance, capacity and performance enhancement plans, and energy-saving plans by using their advanced technical know-how and implementation skills.

    H) Test Plant
    Test plant can confirm the combustion condition of waste liquid. Flow Rate: max. 2 Liters / hr.

    Performance

    In our line-up of this system, the waste liquid incineration capacity ranges from 100kg/h to 20,000kg/h. Waste liquid including Sodium and Potassium can be combusted without early damage of refractory.

    Several different types of fuel can be used for the auxiliary burner, not only gaseous and/or liquid fuels but also waste oil.

    <Auxiliary burner>

    This system can reduce to less than 100ppm of NOx by non-catalysis reaction. Discharge SOx and hydrogen chloride (HCL) is restrained by neutralization in incinerator or quencher with caustic soda.

    Total organic carbon (TOC) is converted into carbon dioxide (CO2) at a removal rate of 99.99% or greater. Fluorocarbon can be decomposed at a rate of 99.99% or greater. Dioxins concentration from stack is less than 0.1μg-TEQ / m3N, and it in effluent is less than 10pg-TEQ / Liter.

    Note) Dioxins concentration
    These values have been adopted as regulations in many countries for more than 10 years.

    Technical maturity

    Supply records of Waste Liquid Incineration System are approx. 400 from 1963. (See attached supply records

    Conceivable risk

    A) Refractory Drop

    Prevention) Thickness of refractory checking every year
    Disposition) System Stop and installation of new refractory

    B) Plugging of injection nozzle

    Prevention) Checking of fluid pressure twice per one operation term
    Disposition) Removing the plugged material after taking apart injection nozzle

    Information on patent related to this technology (if applicable)

    None. But, we have know-how which can be used to obtain a patent in the future.

    Company Data

    Name Tsukishima Kankyo Engineering Ltd.
    Address 3-12-1, Harumi, Chuo-ku, Tokyo, 103-0053 Japan
    Capital JPY 455 million
    Contact person Department: Marketing and Sales Department
    Name: Mr. Hidefumi Toyotake
    Tel.: +81-3-6758-2312
    Fax: +81-3-6758-2324
    E-mail: toyotake@tske.co.jp
    URL: www.tske.co.jp
    Number of employees 170 including 20 for international operation  (as of June 2018)
    Date of company foundation April, 1958
    Overseas offices
    Thailand TSK Engineering (Thailand) Co., Ltd.
    China TSK Engineering China Co., Ltd.
    Mlaysia TSK Engineering Malaysia Sdn. Bhd.
    Taiwan TSK Engineering Taiwan Co., Ltd.

    Modality of business transaction

    Partnership

    We will export main equipment and instruments. Non-pressurized vessels and towers will be made by local vendor. Local vendor will construct and maintain our incineration system.
     
    Export of product

    We will export main equipment and instruments. Non-pressurized vessels and towers will be made by local vendor. Local vendor will construct and maintain our incineration system.

    Attachments

    Schematic illustration of the technology

    <Illustration:Waste Liquid Incineration System>

    <Process Flow 1>

    <Process Flow 2>

     

    Contact Person(s) *Please mention that you saw UNIDO's website when making the first contact with the company.

    Mr. Hidefumi ToyotakeE-mail: toyotake@tske.co.jp

    Registered Category

    • Waste treatment & management : Industrial waste