CS201496B1 - Glass melting double-chamber recuperative tank furnace with longitudinal flame line - Google Patents

Description

THE CZECHOSLOVAK SOCIALIST REPUBLIC (19) DESCRIPTION OF THE INVENTION FOR A CERTIFICATE OF CERTIFICATE 201496 (11) (Bl) (51) Int. Cl3 (22) Registered 11 04 79 (21) (PV 2481-79) C 03 B 5/04 (40). Published 29 02 80 OFFICE AND DISCOVERY OFFICE (45) Issued 31 03 82 1 t (75) '

Autořvynálezu. PACOVSKÝ VLADIMÍR ing., CSc., KUTNÁ HORA (54) Glass melting furnace space recuperative furnace with longitudinal direction of flame

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass melting two-pass recuperative furnace with a longitudinally directed flame flow downstream of a melting space separated by a submerged bridge from a working space equipped with spray nozzles of fuel in the feed section and a burner outlet of flue gases that are connected to a non-flow. . There are known glass melting tank recuperation furnaces, both single and double-space, with longitudinal flame guidance. Jedentypes are furnaces with flame-guiding flow, ie towards the enclosure, as described, for example, in Bulgarian Patent No. 12.118 and GDR No. 25.276 and 57.065. Another type of downstream glass furnace is as described in, for example, V. Mainer: "Glassblower" (SNTL 1967) on pages 158-162, or the Soviet copyright certificates no.361.986 and 444.734. A characteristic feature of these furnaces is that the furnace has two vaults, one main vault and the inner vault, and the author's certificate no. 444.734, even two inter-vaults. According to the Soviet Certificate of Authentication No. 361.986, the vaults are inclined towards the working space. The inner vault allows the flame to be guided along the length of the furnace so that fuel burn-up occurs at the transition points of the flue gas from the melting space to the outlet formed by the inner vault and the outer vault. This arrangement was justified by the design of the previously used fuel supply nozzles to the hot air stream preheated in the recuperator.

The disadvantage is that the inner intermediate vault is very stressed. This is manifested by the loss of fittings or larger units, especially at the points of the gates or at the end of the vault. The space between the vaults is gradually clogged with the products of the flue gas, which deteriorate the tensile conditions of the exhaust and, in addition, the high corrosion temperatures of the gaps between the blocks and flow, form drops and stalactites that enter the enamel and cause inhomogeneity in the enamel. , especially cervix.

These disadvantages are eliminated or substantially reduced in the furnace according to the invention, which is characterized in that the flue gas duct between the burner and the dome is designed as a diffuser, the inlet bottom of which has an inclination of 3 to 30 ° relative to the duct. horizontal plane.

By removing the inner intermediate wall, the consumption of high-quality refractory material for the furnace construction is reduced and its simplification is simplified.

Claims (1)

2 strukce. Preventive interventions to protect the inner intermediate wall against corrosion-resistant coatings of protective coatings are eliminated and danger is eliminated. accidents by the fall of an intermediate vault or its parts, it will improve the quality. enamel, prolong the life of the liver and improve the tensile conditions of the flue gas leaving the recuperator. An exemplary embodiment of the invention is described below and schematically illustrated in the accompanying drawing, which is an elevational view of the furnace. The melting furnace 1 consists of a melting space 2 connected by a flow 3 formed by a submerged bridge 4 with a working space 5. In the melting space 2, the folding part 6 is with the loading gobo 7 on the side. The entrance of the furnace burner 9 is adjacent to the furnace base 6 and the fuel nozzles 10 of the fuel, e.g., oil or gas, are arranged below the port 8. Between the burner port 8a and the vault 11 there is a flue gas exhaust 12 formed as a diffuser whose inlet bottom. wall 13. PSED ε ε T Glass melting two-chamber furnace furnace with longitudinal conduction of flame flow consisting of a melting space partially submerged by the working space, equipped with a burner section, spray nozzles and flue gas exhaust, is inclined with respect to horizontal plane angle and equal to 3 to 30 °. The flue gas exhaust 12 of the burner port 8 opens into the respective portion of the recuperator 14. The furnace 1 rests on the lower melt 15. The furnace functions as follows: The fuel enters the spray nozzles 10 and mixes with the preheated combustion air flowing from the recuperator 14 through the burner passage 8. The resulting flame spreads at an optimum distance above the charge in the loading section 6 and proceeds above the surface forming the glass. The flue gas formed at the end of the melting space 2 is lifted up by the cantilever 11, turned back and passed through a duct 12 formed as a diffuser into the recuperator 14 where it preheats the air fed into the inlet. 8. Flame length and flame coverage are determined by the fuel exit velocity of the spray nozzles 10, the exit velocity, and the preheated combustion air temperature of the burner port 8a by its contact angle with the fuel. INCLUDING that are connected to a recuperator, characterized in that the flue gas exhaust (12) between the burner (9) and the dome (11) is designed as a diffuser, the inlet bottom wall (13) of which is inclined at an angle (α) equal to 3 to 30 ° to the horizontal. 1 drawing