An energy-saving tunnel kiln

Abstract

The invention discloses an energy-saving type tunnel kiln. The energy-saving tunnel kiln is characterized in that the energy-saving type tunnel kiln comprises a kiln body extending horizontally and a kiln car driving in the kiln body. The kiln body comprises a kiln crown, a kiln wall and a working channel. The kiln wall is used for fixing a wall body high platform on foundation. The wall body high platform is built by laying rubble brick bodies. An elevating platform formed by concrete pouring is arranged on the high platform. A first wall body layer, a second cavity layer, a cavity thermal insulating layer and a third wall body layer which are sequentially arranged from the inside to the outside are all arranged on a preheating section, a roasting section, a holding section and the elevating layer on a cooling section. The holding section is provided with a suspended brick structure. The suspended brick mechanism comprises multiple suspended bricks which are arrayed closely in sequence. The suspended bricks are in an inverted T shape. According to the insulating structure of the energy-saving type tunnel kiln, the construction is convenient, quick, energy-saving and environmental-friendly. The insulation effect is improved, and the energy consumption is reduced. The structure of the suspended bricks is simple, the installation is convenient, shaft bricks are arranged between suspended bricks, the air tightness is improved, and the energy loss is reduced.

Description

technical field [0001] The invention relates to an energy-saving tunnel kiln. Background technique [0002] Tunnel kiln is generally a long linear tunnel with fixed walls and vaults on both sides and top, and kiln cars run on tracks laid at the bottom. The combustion equipment is installed on both sides of the middle part of the tunnel kiln, which constitutes a fixed high-temperature zone - the firing zone. The high-temperature flue gas generated by combustion flows along the tunnel to the kiln head under the action of the chimney at the front end of the tunnel kiln or the induced draft fan. At the same time, the products entering the kiln are gradually preheated, and this section constitutes the preheating zone of the tunnel kiln. The cold air blows into the kiln tail of the tunnel kiln to cool the products in the last section of the tunnel kiln. After the cold air blows in flows through the products and is heated, it is drawn out and sent to the dryer as a heat source for...

AI Technical Summary

Problems solved by technology

The existing coal gangue tunnel kiln has the following problems in the process of firing refractory materials: the thermal insulation effect of the kiln body is poor, resulting in more energy loss, which affects the production cost and product quality; the kiln roof hanging method in the thermal insulation section is Several small hanging bricks are sandwiched between two large hanging bricks. The concave and protruding parts between the big and small hanging bricks form a whole. They are suspended on the steel beams through metal suspenders. The airtightness of this structure is poor. There is a lot of energy loss; the design of the smoke exhaust structure of the existing tunnel kiln is unreasonable, resulting in the inability to achieve a more reasonable temperature adjustment and pressure adjustment effect, which affects the quality of the finished product in the kiln; the structure design of the coal feeding structure is unreasonable, and the entire pipe is usually used It is used for coal feeding, and it is difficult to construct in layered construction

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