Drying furnace for preparing calcium oxide from acetylene sludge

Abstract

The invention discloses a drying furnace for preparing calcium oxide from acetylene sludge.The drying furnace comprises a furnace body, a feeding opening is formed in one side of the top of the furnace body, two material delivering plates are arranged below the feeding opening and arranged in the furnace body in an embedded mode in a V shape, and the ends, located at the side of the feeding opening, of the two material delivering plates are connected with vibration motors outside the furnace body respectively; a discharging opening is formed in the position, at the bottom of the material delivering plate on the lower layer, of the furnace body; a dust-absorbing and impurity-removing device is connected to the side, opposite to the feeding opening, of the top of the furnace body.The drying furnace for preparing calcium oxide from the acetylene sludge is simple in structure and reasonable in design, and through structural design of the material delivering plates, drying efficiency and the loosening characteristic of materials are effectively improved; through design of the dust-absorbing device, dust and harmful substance absorption efficiency is improved, and the absorbing device is prevented from being corroded or blocked; the drying furnace has the advantages that energy conservation, environmental protection and high efficiency are achieved, is a good drier for preparing calcium oxide from the acetylene sludge and is good in application prospect.

Description

Technical field [0001] The invention relates to the field of calcium oxide production equipment, in particular to a drying furnace for preparing calcium oxide from calcium carbide slag. Background technique [0002] Calcium carbide slag is a waste residue with calcium hydroxide as the main component after the hydrolysis of calcium carbide to obtain acetylene gas. Calcium carbide slag is large in quantity, high in alkali content, and contains harmful substances such as sulfur and arsenic. If discharged without treatment, it will block the sewers, accumulate river beds, and endanger fishery production. Stacking on land will occupy land and pollute the environment. Due to the high calcium oxide content and fine particle size in calcium carbide slag, it is usually dried and calcined to prepare cement clinker. However, the moisture content of calcium carbide slag after mechanical dehydration is 28 to 35%, which is a high-moisture light waste residue. During the drying process, there...

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Problems solved by technology

However, the moisture content of calcium carbide slag after mechanical dehydration is 28-35%, which belongs to light waste residue with high moisture content. It has the following problems in the drying process: 1. Carbide slag falling into the dryer is prone to stacking and sticking. Phenomenon; 2. After drying, the dust concentration in the exhaust gas is high, and the dust collection equipment is prone to sticking and corrosion

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