Electricity generating method for increasing cement production waste heat

Abstract

The invention discloses an electricity generating method for increasing cement production waste heat and relates to the technical field of cement production. The method comprises the following steps that 1, a heat conduction fin is installed on the inner wall of a cement cellar, and the heat conduction fin is connected with a steam water tank; 2, carbonaceous mudstone particles are added to a cement raw material, and heat generated by the carbonaceous mudstone particles in the material compounding process and heat of the cement raw material are transmitted to the steam water tank through the heat conduction fin; 3, a steam superheater is installed on an air hose of the cement cellar, heat is collected by the steam superheater in the process that the air hose of the cement cellar conducts heat dissipation, and the heat is transmitted to a steam turbine generator unit through a heat high pressure machine. By means of the electricity generating method, the waste heat can be utilized reasonably for generating electricity, the waste heat utilization rate is high, energy is saved, heat generated in the production process can be increased, and waste heat electricity generating capacity is effectively raised.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to a power generation method for increasing waste heat in cement production. Background technique [0002] Cement is a powdery hydraulic inorganic gelling material. After adding water and stirring, it becomes a slurry, which can be hardened in the air or better hardened in water, and can firmly bind sand, stone and other materials together. The word cement is developed from the Latin caementum, which means gravel and flakes. In the early years the mixture of lime and volcanic ash is very similar to lime pozzolanic cement, use it to glue concrete which made of crushed stone. After hardening, the cement not only has high strength, but also can resist the erosion of fresh water or salt water. For a long time, as an important cementing material, it is widely used in civil engineering, water conservancy, national defense and other projects. [0003] Cement can be divided int...

AI Technical Summary

Problems solved by technology

[0025] The main advantage of dry production is low heat consumption (for example, the heat consumption of dry kiln clinker with preheater is 3140-3768 joules / kg), and the disadvantage is that the raw material composition is not easy to be uniform, the workshop has a lot of dust, and the power consumption is high

Wet production has the advantages of simple operation, easy control of raw material components, good product quality, convenient slurry transportation, and less dust in the workshop. The disadvantage is high heat consumption (clinker heat consumption is usually 5234-6490 joules / kg)

[0026] my country is a big country in cement production and consumption. Cement production is a high-energy-consuming industry. In particular, there is still a certain gap between my country's production technology and the world's advanced level. The energy consumption of cement production is the main component of the cost of cement production enterprises. In order to reduce cement production Energy consumption, industry technicians and management personnel use various methods to optimize the production process, and comprehensively utilize the waste heat of cement production. The waste heat power generation of cement production is one of the important measures. There is a lot of waste heat in cement production, and clinker needs to be used before grinding. Cooling, heat dissipation is concentrated, and the amount of heat dissipation is large. Waste heat power generation is one of the better ways to utilize waste heat. However, the utilization rate of power generation of waste heat in existing cement production is low, resulting in part of the heat being unusable and wasting energy.