A self-dusting briquette pyrolysis and cracking synthesis gas production system
A coal pyrolysis and synthesis gas technology, which is applied in gas dedusting, product, liquid scrubbing gas purification, etc., can solve the problems of large condensation recovery system, low gas calorific value, and many operation links, saving construction cost and land occupation. Area, clean and efficient use, uniform temperature distribution effect
Active Publication Date: 2018-07-13
SHENWU TECH GRP CO LTD
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Problems solved by technology
The thermal efficiency of the external heat type is low, and the secondary decomposition of volatile products is serious; the internal heat type process overcomes the shortcomings of the external heat type, and transfers heat to the coal by means of heat carriers (solid heat carrier and gas heat carrier)
The gas heat carrier process has the disadvantages of distilled dry distillation gas, large condensation recovery system, low calorific value of gas, and difficulty in further comprehensive utilization
The solid heat carrier process has certain advantages relatively speaking, but there are many disadvantages such as complex process operation links and high manufacturing costs.
The main purpose of the existing pyrolysis furnaces is to produce oil products, but most of the pyrolysis furnaces, especially those that use pulverized coal as raw materials, contain a lot of dust in the pyrolysis oil, which makes it difficult to effectively process the pyrolysis oil. Utilization, the value of pyrolysis oil is not high, etc.
Method used
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Embodiment 1
[0063] (1) The granular coal crushed to a particle size of ≤10mm enters the riser dryer 2 through the hopper 1. In the riser dryer, 150-250 The flue gas at ℃ dries and lifts the coal, the coal enters the drying cyclone separator 4, and the separated coal powder enters the pyrolysis hopper 5, and the flue gas at about 70-130 °C is sent to the exhaust gas purification through the exhaust fan 6 Device 7, the flue gas that reaches the discharge standard is discharged through the chimney 8.
[0064] (2) Coal enters the regenerative moving bed reactor 3 through the star-shaped feeder 9 in the pyrolysis hopper 5, and the moving bed reactor 3 is divided into a pyrolysis chamber and a cracking chamber by a lattice brick wall.
[0065] (3) One-way regenerative radiant tubes are evenly arranged in the pyrolysis chamber, and the temperature of the tube wall is controlled at 500-700°C by a gas regulating valve. The material stays in the reactor from top to bottom for 1-50 minutes, and is h...
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Abstract
The invention belongs to the technical field of coal pyrolysis and cracking to produce gas, and in particular relates to a system for producing synthesis gas by heating self-cleaning molded coal pyrolysis and cracking based on a regenerative radiant tube. The system includes: pyrolysis hopper; first feeding device; pyrolysis and cracking reactor including: feed inlet, pyrolysis chamber, cracking chamber and cracking gas outlet; and: regenerative radiant tubes; thermally insulated brick walls ; Connecting components; particle bed dedusting device; spray tower; reformer and gas tank. The synthesis gas system of the present invention has simple structure, convenient operation, uniform temperature distribution, and good heating effect. The reactor is divided into a pyrolysis chamber and a cracking chamber. After dedusting the particle bed, the clean oil and gas enter the cracking chamber for deep cracking, which reduces the pressure of the back-end dust removal, avoids the problem of dust in the pyrolysis oil, and truly realizes the clean and efficient use of fossil fuels.
Description
technical field [0001] The invention belongs to the technical field of coal pyrolysis and cracking to produce gas, and specifically relates to a system for producing synthetic gas by heating self-cleaning dust-type granular coal pyrolysis and cracking based on a regenerative radiation tube. Background technique [0002] my country is rich in coal resources, and most of the raw coal is used for direct combustion except for coking and conversion processing. The direct combustion of coal leads to the fact that the oil and gas resources rich in coal have not been fully refined and utilized, and the thermal efficiency of direct combustion is low, which seriously damages the environment. The pyrolysis of coal is to heat coal under an inert atmosphere to produce semi-coke, gas and tar, etc. These products can be used in stages, fully extracting oil and gas resources, and improving the comprehensive utilization efficiency of coal . Coal pyrolysis process can be divided into two ty...
Claims
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IPC IPC(8): C10B53/04C10B53/07C10B53/06C10B53/00C10K1/02C10K1/08
CPCY02P20/143
Inventor 耿层层陈水渺肖磊薛逊吴道洪
Owner SHENWU TECH GRP CO LTD