“Industrial furnace” means any of the following enclosed devices that are integral components of manufacturing processes and that use controlled flame devices to accomplish recovery of materials or energy:

1. (a) Cement kilns;
2. (b) Lime kilns;
3. (c) Aggregate kilns;
4. (d) Phosphate kilns;
5. (e) Coke ovens;
6. (f) Blast furnaces;
7. (g) Smelting, melting, and refining furnaces including pyrometallurgical devices such as cupolas, reverberator furnaces, sintering machines, roasters, and foundry furnaces;
8. (h) Titanium dioxide chloride process oxidation reactors;
9. (i) Methane reforming furnaces;
10. (j) Pulping liquor recovery furnaces;
11. (k) Combustion devices used in the recovery of sulfur values from spent sulfuric acid; or

12. (l) Such other devices as the commissioner adds to this list through a rulemaking in accordance with the rulemaking procedures of RSA 541-A on the basis of one or more of the following factors:

    1. (1) The design and use of the device primarily to accomplish recovery of material products;
    2. (2) The use of the device to burn or reduce raw materials to make a material product;
    3. (3) The use of the device to burn or reduce secondary materials as effective substitutes for raw materials, in processes using raw materials as principal feedstocks;
    4. (4) The use of the device to burn or reduce secondary materials as ingredients in an industrial process to make a material product;
    5. (5) The use of the device in common industrial practice to produce a material product; and
    6. (6) Other factors, as applicable.

Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Hw 100) #12343, eff 8-14-17; (formerly Env-Hw 103.72, renumbered by #12920) (See Revision Note #3 at chapter heading for Env-Hw 100); (formerly Env-Hw 103.75, renumbered by #13405) (See Revision Note #4 at chapter heading for Env-Hw 100) (formerly Env-Hw 103.78)