1875 E. H. Knight III. 1821/2 Pulp-boiler, an apparatus for treating paper stock,..to remove gum,..etc., from the fiber.
1891 25 Feb. 2/3 The work men are supposed to have put the wrong bleaching chemicals into the rotary pulp boiler generating the explosive gas.
2003 (Nexis) 10 Mar. a1 The company is instituting conservation measures and using more heating oil to fire its pulp boilers.