35results about How to "Large block" patented technology

The invention relates to a movable slide bed tunnel type coke oven and a use method thereof, and belongs to the field of coal processing and conversion and coking equipment. The coke oven comprises an oven body (48), a front sealing door (7) of the coke oven body, a back sealing door (25) of the coke oven body, a sub-flue (10), a bottom flue (12) and a main flue (6), and is characterized by comprising a coaling preparation chamber (3), a preheating section (50), a carbonization section (51), coke dry quenching section (52) and a coke outlet preparation chamber (23), each part has different structures, and the five parts are connected in series and communicated with each other; and a movable slide bed (37) of loading briquettes or tamping coal materials (44) sequentially pass through the five parts of the coke oven by intermittently moving on a slideway (35) of the slide bed, so that the coal materials are carbonized into coke. The produced coke has uniform specification, large lumpiness, good strength, high heat energy utilization rate, high degree of mechanization, and clean emission of flue gas, and the invention effectively protects atmosphere and water sources and realizes clean production.

The invention discloses a blending method of dry coke quenching dust-removal ash in a coal blending process. The blending method comprises the following steps: transporting dust-removal ash generated by dry coke quenching every day to a coal storage yard through an ash discharge opening, arranging the dust-removal ash near low-sulfur coking coal of which the content of sulfur is less than 0.4% and low-ash meager lean coal of which the content of ash is less than 8.5% which can be blended for separately storing; according to the blending ratio required by the blending instruction of a forklift in a coal blending workshop, fully and uniformly blending the dry coke quenching dust-removal ash, low-sulfur coking coal and the low-ash meager lean coal at a weight ratio of 1:5:5 to form novel mixed dust-removal ash; conveying the mixed dust-removal ash to a coal blending bin, blending the mixed dust-removal ash and 1 / 3 coking coal, gas coal, coking coal and meager lean coal at a weight ratio of 7: 3 and rich coal to form into-the-furnace coal, crushing the into-the-furnace coal, adding water and conveying to the coal storage bin for coking coal production to replace partial meager lean coal for return blending and coking, wherein the mixed dust-removal ash, the 1 / 3 coking coal, the gas coal, the coking coal and meager lean coal at a weight ratio of 7:3 and the rich coal respectively account for 15%, 32%, 15%, 21% and 17% of the into-the-furnace coal in weight ratio. The process is convenient to operate and has the characteristic of high flexibility.

A method for preparing coke. The invention provides a method for preparing molded coke in a vertical coke oven. The method of the invention includes dry distillation of main coking coal, anthracite, coke powder, pitch and petroleum coke as raw materials. In the invention, the blended coal is stirred at high temperature and high pressure according to a certain proportion, shaped, charged in a furnace, and carbonized to obtain molded coke. This formula effectively solves the impact of colloidal body changes during high temperature and rapid heating. The coke quality reaches the national standard first-level rate of more than 95%. It has uniform product specifications, large lumps, high strength, low porosity and reactivity, and ash content. The characteristics of low sulfur content.

The invention belongs to the technical field of cutting mechanism of tunneling machine, particularly provides a cutting mechanism for a multi-arm hob-type continuous tunneling machine, and solves the problems of an existing cutting mechanism of a continuous tunneling machine, such as unsuitability for hard rock tunnel and low rock breaking efficiency. The cutting mechanism comprises a slewing bearing, three outer rotation arms, an inner rotation arm, a disc hob and a swinging cylinder. The slewing bearing comprises an inner ring and an outer ring; the outer ring is fixed on a frame of the tunneling machine; the inner ring is connected to a motor output shaft of the tunneling machine; and outer rotation arms and the inner rotation arm are hinged to the inner ring through pins. The invention has beneficial effects of solving problems of weak rock breaking effect and low production efficiency of a longitudinal tunneling machine, reducing dust generation, improving cutting efficiency, and realizing forming of different section contours.

The invention discloses coke and a preparation method thereof. The coke is made by coking of mixed coal; the mixed coal comprises, by weight, 65-75 parts of 1 / 3 coking coal, 5-10 parts of lean coal, 15-20 parts of coking coal, and 3-8 parts of meager lean coal. The coke and the preparation method thereof have the advantage that the coke has high crushing strength and wear resistance.