41results about How to "Prevent overburning" patented technology

A method of and apparatus (41) for determining the organic carbon content of soil in heated air or gas is forced through a soil sample (36) to burn off or oxidise organic carbon in the sample with the change of weight of the sample (36) indicating the carbon content in the soil sample (36) and thus the soil from which the sample (36) is taken. The apparatus (41) includes a housing (47) in which one or more soil samples (36) may be located, a heater unit (51) for heating the air or gas for passage through the soil samples (36) to burn off organic materials therein including organic carbon. The apparatus (41) also includes a weighing device (76) which enables the change of weight of the soil samples (36) to be determined whilst the samples (36) remain within the housing (47).

Mercury adsorbed from combustion gas by activated carbon can be sequestered in concrete containing air entraining admixtures. The activated carbon may be made by providing a carbon char made from anthracite or low-volatile bituminous coal that was devolatilized and carbonized in an oxygen-depleted environment and activating this char in the presence of steam to provide an activated carbon with an acid blue 80 index of less than about 30 milligrams per gram of carbon. The activated carbon may also be made by providing a carbon char that was devolatilized and carbonized in an oxygen-depleted environment and activating this char in the presence of oxygen to provide an activated carbon. The carbon may be injected into a combustion gas stream containing fly ash and mercury and may then be removed with fly ash from the gas stream. The resulting composition may be used as a partial substitute for cement in air-entrained concretes.

A method for optimizing purge gas of a flare system includes measuring a flow of flare fluids within a flare system to obtain a measured flow value. The flow of the flare fluids is compared to a target flow to obtain a difference between the flow of the flare fluids and the target flow. A control valve is operated to amend a flow of purge gas and the steps of measuring a flow of flare fluids and comparing the flow of the flare fluids to the target flow are repeated until the flow of the purge gas is within a target range. A value of the flow of purge gas is measured and transmitted wirelessly to a control system.

The invention relates to a laser cutting machine, which mainly solves the problem of the prior art that the heat damage on parts is caused by the generated heat and chips are difficultly removed when a pipe with small pipe diameter is processed by the laser cutting machine. The laser cutting machine adopts the technical scheme that the laser cutting machine comprises a cutting head and a front water guide system, wherein a motor (1) of the front water guide system is connected with a water guide pipe (4) through a coupling (2) and a bushing (3), one end of the bushing (3) is positioned in the coupling (2), the other end of the bushing (3) is in sealed connection with the water guide pipe (4), one end, near the bushing (3), of the water guide pipe (4) is provided with a water inlet (6), the water inlet (6) is connected with a sealing bearing (7) of an automatic water supply system (5), the outer diameter of the water guide pipe (4) is smaller than the inner diameter of a pipe (8) to be processed, and the end, away from the bushing (3), of the water guide pipe (4) is inserted into the pipe to be processed. The problems are well solved, and the laser cutting machine can be widely applied to the industrial production of laser wet cutting processing.

The invention relates to a laser cutting machine, mainly solving the problems that during the process of machining a tube with a miniature diameter by a laser cutting machine in the prior art, thermal damage is brought to a spare part by generated heat, and scraps are not easily cleaned. The invention adopts the technical scheme that the laser cutting machine comprises a coaxial water jet-flowing device system and a front water guiding system, wherein the motor (1) of the front water guiding system is connected with a water guiding pipe (4) through a coupling (2) and a bushing (3), one end of the bushing (3) is arranged in the coupling (2), the other end of the bushing (3) is connected with the water guiding pipe (4) in a sealing way, a water inlet (6) is arranged on the end of the water guiding pipe (4) close to the bushing (3), the water inlet (6) is connected with the sealed bearing (7) of an automatic water supply system (5), the outer diameter of the water guiding pipe (4) is smaller than the inner diameter of a to-be-processed tube (8), and the end, far away from the bushing (3), of the water guiding pipe (4) is embedded into the inside of the to-be-processed tube. According to the invention, the problems are better solved, and the laser cutting machine can be applied to the industrial production of laser wet cutting processing.

The invention relates to a laser wet cutting machining method which mainly solves the problems in the prior art that when a laser cutting machine processes a pipe with a small diameter, the produced heat damages parts and chips are not easily removed. The laser wet cutting method comprises the following steps that the pipe to be cut is fixedly arranged on the rotary shaft of the cutting machine, a water guiding pipe of the water guiding system of the cutting machine is inserted from one end of the thin-wall pipe to be cut, the laser cutting machine is started so that the pipe to be cut rotates, the water guiding system of the laser cutting machine is started so that the water guiding pipe rotates, the water circulation module of the laser cutting machine is started, and the cutting head of the laser cutting machine is started to cut the pipe. Due to the adoption of the technical scheme, the problems are well solved, and the laser cutting machining method can be used in the industrial production of laser wet cutting machining.