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What is the significance of petroleum coke increasing agent in chemical industry?

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What is the significance of petroleum coke increasing agent in chemical industry?

Date:2017-08-24 Author: Click:

Petroleum coke carburizer is a kind of industrial element to replace heavy oil, kerosene and natural gas, which has been widely used in petrochemical industry.

Petroleum coke carburizer substitutes for fuel without changing the structure of glass kiln and affecting the normal production. It can greatly reduce the production cost and has achieved considerable economic benefits in many glass factories. According to the requirement of glass kiln and the principle of pneumatic conveying, the graphitized petroleum coke is made into powder with certain granularity, which is mixed with compressed air by special equipment in a fluidized solid-gas two-phase fluid, and is injected into the kiln through pipes for combustion.

Increasingly scarce environment, environmental protection and energy conservation has become a global consensus. Our country strongly advocates and supports energy conservation, and focuses on energy saving enterprises. From the development of domestic steel-making enterprises in the past two years, the steel-making industry is still undergoing a severe test, and the pressure of steel-making enterprises can be seen only by the phase of environmental pollution.

Therefore, most steelmaking manufacturers began to adjust production, adjust product quality and adjust the utilization rate of products.

Today we are going to see how steelmakers adjust their use of carburizers and silicon carbide resources to improve efficiency and product quality.

In the smelting process, the alloy is baked before adding the alloy.

1. Carburizer and silicon carbide deoxidizer (these two materials become necessary materials for steel-making and casting, from the aspects of reducing costs and improving product quality) to keep dry; Carburizer

2. The alloy worker knows the amount of addition and tapping of other alloy materials such as carburizer and silicon carbide, and accurately calculates the amount of alloy addition. According to the end-point carbon, residual manganese and the oxidation of molten steel, the absorptivity of the alloy is reasonably determined.

Steelmaking silicon carbide

3. Guarantee the time of the end-point falling gun to ensure the representativeness of the end-point composition; Strictly add carbon powder into the steel tapping process according to the alloy addition time, and add carbon powder into the steel flow impact zone to ensure that the carbon powder addition time and alloy synchronization;

4. Strictly implement the bottom blowing argon system to ensure the bottom blowing effect of ladle; maintain the tapping port to ensure tapping time; 5. After tapping, slag must be well blocked, slag quantity must be controlled, and slag discharge at large mouth is strictly prohibited. When the blowing process is abnormal, the furnace head notifies the alloy worker to adjust the alloy in advance, and the alloy is added to the aligned steel flow during tapping to ensure complete melting and increase the absorption rate.

Carbon additive for petroleum coke

From some measures, we can see that most manufacturers are actively adjusting production, adjusting the use of materials, adjusting technology, adjusting production tasks and so on under the conditions of promoting environmental protection, so that they can do better. Furnace input method:

The carburizing agent is suitable for smelting in induction furnace, but the specific use is different according to the technological requirements.

(1) The carburizer can be added to the lower and middle parts of the furnace according to the proportion or carbon equivalent requirement, and the recovery rate can reach more than 95%.

(2) If the carbon content of molten iron is insufficient to adjust the carbon content, the slag in the furnace is cleaned first, and then the carburizing agent is added. Carbon is dissolved and absorbed by heating up the molten iron, electromagnetic stirring or manual stirring. The recovery rate can be about 90. If the low temperature carburizing process is adopted, that is, the burden is only melted part, and the molten iron temperature is low. All the carburizers are added to the molten iron at one time, and the molten iron is pressed into the molten iron with the solid burden at the same time so as not to expose the surface of the molten iron. This method can increase carbon content by more than 1%.

2. Carburizing outside the furnace:

(1) cartridge toner

Graphite is used as a carburizing agent, and the volume of blowing is 40kg/t. It is expected that the carbon content of molten iron will increase from 2% to 3%. With the increase of carbon content in molten iron, the utilization rate of carbon decreases. The molten iron temperature before and after carburization is 1600 C and 1299 C on average. In general, nitrogen is used as carrier for graphite powder carburization, but in industrial production conditions, it is more convenient to use compressed air, and oxygen combustion in compressed air produces CO. Chemical reaction heat can compensate part of the temperature drop, and the reduction atmosphere of CO is conducive to improving the carburization effect.



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