9. WS Effective use of thermal energy in industry_Mino

VI CDTI-NEDO JOINT WORKSHOPTHE EFFECTIVE USE OF THERMAL ENERGY IN INDUSTRY

MINO CERAMIC CO.,LTDHironobu Taguchi

MANAGER

TECHNICAL SECTION

CERAMIC ENGINEERING & CONSTRUCTION DEPT.

Bilbao, 23rd June 2016

#WasteHeat The Effective use of termal energy in industry

01Organization / Company - Business Overview

Ceramics & Refractories

Flooring & Paving Ceramic Engineering & Construction

Refractories ceramicsengineering maintenance

Batch type Kiln

Tunnel Kiln

Cerasand TM Cerasand HW-N TM

Ceraresin UW TMToughcon TM Automatic Machine


02Organization / Company - Corporate Outline

Company name : MINO CERAMIC CO.,LTD (美濃窯業株式会社)

Establishment : August 14, 1918

President : Shigetoshi OTA

Headquarter : Nagoya-city, JAPAN

Net Sales : 9,900(Millions of yen)

Employees : 275 people (March 2015)

Company policy :

“The Highest Quality is the Greatest Service.”


03Waste heat of industrial kiln

Industrial Kiln(Steel, Chemical, Ceramics, etc.)

Industrial Kiln(batch type)

Heat for productsonly 2%

Energy balance of the high temperature industrial kiln

Exhaust gas loss 60%

Thermal storage30%

Heat release 8%


04Research Plan of industrial kiln

②Heat exchanger(operation temperature 1300℃)

exhaust gas

③Ceramic heat storage body with core-shell structure(Regenerative burner)

④Chemical heat storage

Residual heat of next batch

①Ultra high porous ceramics


09①Ultra high porous ceramics

Fabricated porous ceramics(140mm×50mm×25mmt)


12②Heat exchanger (operation temperature 1300℃)


15

Exhaust Air

FuelFuel

Heat sink

Air valve Air valve

Al2O3 ball (φ 25 mm) packing bedLow thermal conductivity

Burner switching time: 30 sec～ 1 min

Regenerator:

High efficiency exhaust heat recovery system for high temp. industrial kiln

Heat input-output speed and density of storagemedia determine the efficiency of system

Al2O3 ball New thermal storage body with Core-shellstructure was proposed for higher efficiency

③Ceramic heat storage body with core-shell structure


16④Chemical heat storage

CaO/H2O system

Dehydration (heat input)：

CaO ＋ H2O ⇔ Ca(OH)2

Hydration (heat output) 500℃

Reversible reaction of Hydration/dehydration of oxideEx. CaO/H2O, MgO/H2O, ZnO/H2O, LiO/H2O

CaO H2O

Ca(OH)2 H2O

H2O(g)

H2O(g)Qinput

Qoutput

Heat input mode

Heat output mode

・High chemical stability・high heat storage capacity (63.7 KJ/mol)

Improvement :Heat storage temperature is limited ( ℃).Less reaction rate of hydration/dehydration

⇒ mismatch of crystal structure between CaO and Mg(OH)2


17Other interesting information – industrial kiln

tunnel kiln roller-hearth kilnbatch-type kiln

mesh-belt kiln electric kiln microwave kiln

We have create various types of industrial kilns.


18Other interesting information – automatic machine

Palletizing equipment

Packing equipment

Stacking equipment

Robotic arms Warehouse

bagging equipment

THANK YOUどうも有難う御座います

ESKERRIK ASKOGRACIAS

Hironobu Taguchi

[email protected]

MINO CERAMIC CO.,LTD

For further information