Additive Composition and Method for Preventing Fouling, Slagging, and Corrosion of Biomass Multi Fuel Fired or Dedicated Boilers Using Alumina

• US 20200131449A1
• Filed: 05/10/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Abandoned Application

• Current Assignee: Blue Ocean Industry, Inc.
• Original Assignee: Blue Ocean Industry, Inc.
• Inventors: JEON, Kwonho
• Application Number:
  US16/408,949
• Publication Number:
  US 20200131449A1
• Time in Patent Office: Days
• CPC Class Codes: C10L 10/04 for minimising corrosion or incrustation
• CPC Class Codes: C10L 10/06 for facilitating soot removal
• CPC Class Codes: C10L 2200/0218 Group III metals: Sc, Y, Al, Ga, In, Tl
• CPC Class Codes: C10L 2200/0254 Oxygen containing compounds
• CPC Class Codes: C10L 2200/029 Salts, such as carbonates, oxides, hydroxides, percompounds, e.g. peroxides, perborates, nitrates, nitrites, sulfates, and silicates
• CPC Class Codes: C10L 2200/0469 Renewables or materials of biological origin
• CPC Class Codes: C10L 2230/04 Catalyst added to fuel stream to improve a reaction
• CPC Class Codes: C10L 2270/04 for turbines, planes, power generation
• CPC Class Codes: C10L 2290/22 Impregnation or immersion of a fuel component or a fuel as a whole
• CPC Class Codes: C10L 2290/24 Mixing, stirring of fuel components
• CPC Class Codes: C10L 5/04 Raw material of mineral origin to be used; Pretreatment thereof pretreatment of fuels of non-mineral origin C10L5/40
• CPC Class Codes: C10L 5/361 Briquettes
• CPC Class Codes: C10L 5/40 essentially based on materials of non-mineral origin
• CPC Class Codes: C10L 5/442 Wood or forestry waste
• CPC Class Codes: C10L 9/10 by using additives
• CPC Class Codes: F22B 37/025 Devices and methods for diminishing corrosion, e.g. by preventing cooling beneath the dew point
• CPC Class Codes: F23G 2201/701 with additives
• CPC Class Codes: F23J 7/00 Arrangement of devices for supplying chemicals to fire
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel

Abstract

Provided is an additive composition and method for preventing fouling, slagging and corrosion of biomass multi fuel fired or dedicated boilers using alumina, and more particularly, to an additive composition capable of effectively preventing from fouling, slagging and corrosion of the inner wall of a biomass boiler and optimizing the thermal efficiency of power generation facilities by increasing the melting temperature of an inorganic material contained in the biomass fuel using alumina, and the additive composition may include 0.1 to 5 parts by weight of alumina (Al₂O₃) in respective of 100 parts by weight of fuels fed into biomass multi fuel fired or dedicated boilers.

Claims

1. An additive composition for preventing fouling, slagging, and corrosion of a biomass multi-fuel fired boiler or a dedicated boiler using alumina, the additive composition comprising:

0.1 to 5 parts by weight of alumina (Al₂O₃) in respect to 100 parts by weight of biomass fuel injected into the biomass multi-fuel fired boiler or the dedicated boiler.

2. The additive composition of claim 1, further comprising 0.1 to 5 parts by weight of cinder.

3. The additive composition of claim 1, further comprising 0.1 to 10 parts by weight of silica containing Al₂O₃ in respect to 100 parts by weight of biomass fuel, wherein silica containing Al₂O₃ is obtained from bauxite using the Bayer process during aluminum smelting.

4. A method of preventing fouling, slagging, and corrosion of a biomass multi-fuel fired boiler or a dedicated boiler using alumina, the method comprising:

injecting an additive composition comprising 0.1 to 5 parts by weight of alumina (Al₂O₃) in respect to 100 parts by weight of fuel.

5. The method of claim 4, wherein the additive composition further comprises 0.1 to 5 parts by weight of cinder.

6. The method of claim 4, wherein the additive composition further comprises 0.1 to 10 parts by weight of silica containing Al₂O₃, and wherein silica containing Al₂O₃ is obtained from bauxite using the Bayer process during aluminum smelting.

7. The method of claim 4, wherein injecting of the additive composition increases a melting point of inorganic materials of biomass fuel.

8. The method of claim 7, wherein the melting point of inorganic materials is increased by chemical reaction (I):

(I) Al₂O₃·

6SiO₂+2H₂O+2K(OH)−

>

Al₂O₃·

6SiO₂·

K₂O+3H₂O

9. The method of claim 7, wherein the melting point of inorganic materials is increased by chemical reaction (II):

(II) Al₂O₃·

2SiO₂+2H₂O+2Na(OH)−

>

Al₂O₃·

2SiO₂·

Na₂O+3H₂O