摘要:
The invention discloses a coal material decomposition apparatus with combined screw-type bins, which comprises a sealed rotary kiln body (1) provided with a coal inlet (2) and a coal outlet (3). A coal decomposition gas collecting pipe (10) is arranged in the kiln body. The coal decomposition gas collecting pipe is provided with two parallel spirals (11) for dividing space in the kiln body into a heating gas bin (5) and a coal material decomposition bin (4). The coal decomposition gas collecting pipe is communicated with the coal material decomposition bin through a gas guide hole (12) arranged in the coal material decomposition bin. Pulverized coal after absorbing heat sufficiently is decomposed into coal gas, coal tar gas and coal with high calorific value. As the kiln body is internally divided into the a heating gas bin and a coal material decomposition bin isolated from each other, a large amount of hot gas in the heating gas conducts and radiates the heat to the pulverized coal in the coal material decomposition bin, and the pulverized coal can fully absorb the heat so as to be heated for being decomposed into the gas, coal tar gas and coal with high heat-value in the coal material decomposition bin.
摘要:
The invention discloses a coal decomposition method and equipment in cycle heating gas style. The coal decomposition equipment can avoid introducing impurity, ensure a pure decomposed gas and keep continuous heating without extrinsic heat source, which includes an airtight kiln body with coal inlet and coal outlet; a facility for impelling and decomposing coal set in the kiln body; a coal decomposed gas collecting pipe set in one end of the airtight kiln body, and a high temperature gas input pipe set in the other end of the airtight kiln body; wherein the coal decomposed gas collecting pipe is connected with a post-processing facility and communicates with the high temperature gas input pipe through a circle pipe, and the circle pipe and/ or the high temperature gas input pipe comprises a heating device.
摘要:
The invention discloses a sleeve-type coal material decomposition apparatus which includes a kiln body. The inside of said kiln body is set with coal material decomposition-promoting layers and circular heating layers centered on the axis of kiln body; the said circular coal material decomposition-promoting layers and circular heating layers are isolated from each other; both ends of the said circular coal material decomposition-promoting layer are respectively connected to the coal inlet and coal outlet on kiln body and are also connected to the decomposition gas collecting mechanism on kiln body. The coal material decomposition-promoting layers and circular heating layers are isolated from each other, which is helpful for the acquisition of pure coal decomposition gas. The heat released from circular heating layers is fully absorbed by adjacent set coal material decomposition-promoting layers via conduction and radiation forms; the full absorption of pulverized coal brings better effect of complete decomposition.
摘要:
A multi-pipe external-heating coal decomposition equipment, comprising a airtight kiln body; a channel for impelling and decomposing coal is formed in the kiln body, which has a coal inlet, a coal outlet and a collecting pipe for coal decomposition gas; a heat transfer chamber is formed between the channel and inner wall of the kiln body, which is connected with a high temperature gas heating facility and comprises a heated gas outlet. Because the channel for impelling and decomposing coal is set in a kiln body with high temperature, so a vast of heat gas in high temperature kiln body surrounds the channel and its heat conducts and radiates to the pulverized coal in the channel. Thus, the pulverized coal can fully absorb the heat to be heated for decomposing to the gas, coal tar and coal with high heat-value in the channel.
摘要:
An environment servo type clean metal casting mold has a casting mold body with an ingate (2). The casting mold body includes a cold bottom mold plate (3) and a peripheral mold plate (1) that is connected with the cold bottom plate (3). The peripheral mold plate (1) is provided with a vertical temperature break servo device. The temperature of the vertical temperature abrupt servo device contacting with the cooling metal varies in the vertical direction, hence the liquid metal has rapid heat emission, crystallization and solidification.
摘要:
The invention discloses a non-electroslag remelting type clean metal ingot mold comprising an ingot mold body and a insulating riser arranged on the ingot mold body; an insulated heating and heat preservation device is vertically arranged in the ingot mold body and divides the space in the ingot mold body into a plurality of independent cavity units; and the cavity units are distributed in two rows in the ingot mold body. Because the insulated heating and heat preservation device is arranged in the ingot mold body and divides the space in the ingot mold body into a plurality of independent cavity units, most of impurities and segregates in liquid metals are enriched in the part in contact with the isolation and heat insulation mechanism during the directional solidification and crystallization of the liquid metals and the enriched alloy segregates, and the impurities can be easily eliminated by utilizing flame or other processing methods. Therefore, the transfer and the elimination of the segregates and the impurities in ingots can be realized, and the purpose of purifying the ingots is achieved.
摘要:
A clean metal ingot mold comprises an ingot mold body and an insulating riser arranged on the ingot mold body. The bottom mold plate of the ingot mold is provided with at least a ridge connected thereto. The region having a V-shape containing impurities produced during the crystallization process of the liquid metal moves upwards because of the ridge, and then the impurities depart from the centre of the cast ingot and the impurities are more centralized. A water-cooling device is arranged in the ridge to allow the temperature of the metal in the ingot mold to decrease rapidly, and the crystallization process of the metal to be rapid.