The invention concerns a process for detecting water leaks in smelting furnaces (2; 4) or in metal or alloy treatment plants, comprising the following steps: (i) providing at least one smelting furnace (2; 4), or at least one metal or alloy treatment plant provided with a water cooling system (5) and being connected to a process fume exhaust system; (ii) mixing in the cooling water a tracer chemical which is volatile in the event of water leakage together with the exhaust gases and which is suitable to be detected by an analysis system of the exhaust gases; and (iii) detecting said tracer chemical contained in the exhaust gases by said analysis system comprised in said process fume exhaust plant, wherein said tracer chemical is deuterated water. The invention further refers to a Plant for the production of metals or alloys.

The invention relates to a cement production system with a preheater for preheating the cement raw meal, a calciner for pre-calcining the preheated cement raw meal, and a rotary kiln for firing the pre-calcined cement raw meal, wherein the calciner has a riser pipe through which exhaust gases from the rotary kiln flow. The gas offtake probe is arranged in a calciner nozzle, which is formed by a nozzle-like constricted section of the riser pipe, wherein the gas offtake probe is arranged flush on the calciner nozzle of the riser pipe.

An integrated sensor system for use in a furnace system including a furnace having at least one burner and two or more zones each differently affected by at least one furnace parameter regulating energy input into the furnace, including a first temperature sensor positioned to measure a first temperature in the furnace system, a second temperature sensor positioned to measure a second temperature in the furnace system; and a controller programmed to receive the first and second measured temperatures, and to adjust operation of a furnace system parameter based on a relationship between the first and second temperatures, thereby differentially regulating energy input into at least two of the zones of the furnace; wherein the relationship between the first and second temperatures is a function of one or more of a difference between the two temperatures, a ratio of the two temperatures, and a weighted average of the two temperatures.

A method for determining a fugitive emission factor (EF) and a leakage rate of a combustion source. For a combustion source capable of performing stack emission and fugitive emission, an organized EF, a fugitive EF, and a leakage rate of fugitive emission are respectively obtained through calculation based on material balance. The method solves the problem that it is impossible to collect a total amount of smoke and to quantify its volume in a field test and the problem that a conventional carbon mass balance (CMB) method cannot distinguish organized leakage from fugitive leakage. The method can be used not only for determining gas leaked from residential indoor stoves using coal, biomass, etc., but also for determining fugitive emissions from other sources, such as the amount of gas leaked to the surrounding environment through the body of a brick kiln in a brick and tile factory.

A high temperature reaction system includes a reaction tube including a heating space, a discharge unit, a cooling unit, a feeding unit and an observation and analysis unit. The discharge unit is disposed opposite to an inlet of the heating space and has a discharge space communicating the heating space, and an observation window and a discharge opening which communicate the discharge space. The cooling unit has a cooling space communicating the discharge opening. The feeding unit includes a carrier holding a sample, and a moving module for moving the carrier and the sample. The observation and analysis unit includes an image capture module and an analysis module for analyzing gas released by the sample.

Recycling of low and medium radioactivity nuclear waste from VVER and RBMK reactors and other nuclear installations.

The invention uses a recycling plant consisting of a waste feed unit; a plasma shaft-type furnace with a melter in the hearth of the furnace and a slug discharge unit connected with a receiving tank for molten slug; an air supply unit delivering air to the furnace to a pyrolysis gas combustion chamber; an evaporative heat exchanger for sharp reduction of the flue gases temperature; a gas purification unit with a sock-type filter; a heat-exchanger and a scrubber; pumps and tanks for agents and recycled products; fittings; and at least, one control module which is electrically connected to the slug discharge control module, an interior environment control module, an equipment status control module and, at least, one gas analytical module.

A high temperature reaction system includes a reaction tube including a heating space, a discharge unit, a cooling unit, a feeding unit and an observation and analysis unit. The discharge unit is disposed opposite to an inlet of the heating space and has a discharge space communicating the heating space, and an observation window and a discharge opening which communicate the discharge space. The cooling unit has a cooling space communicating the discharge opening. The feeding unit includes a carrier holding a sample, and a moving module for moving the carrier and the sample. The observation and analysis unit includes an image capture module and an analysis module for analyzing gas released by the sample.

An oven appliance, as provided herein, may include a cabinet, a ventilation fan, a sensor enclosure, a humidity sensor, and a sensor fan. The cabinet may define a cooking chamber and an oven vent downstream therefrom to direct an exhaust flow from the cooking chamber. The ventilation fan may be mounted to the cabinet downstream from the oven vent. The sensor enclosure may be mounted to the cabinet outside of the cooking chamber. The sensor enclosure may define an enclosed volume. The sensor enclosure may further define an active flow entrance and an active flow exit in fluid communication with the enclosed volume. The humidity sensor may be disposed within the enclosed volume. The sensor fan may be attached to the cabinet outside of the cooking chamber and upstream from the ventilation fan.

The invention relates to a method for operating a furnace (12), comprising a furnace chamber (14), which is heated by means of at least one burner (16), wherein the method comprises a monitoring of a combustion in the furnace chamber (14), and monitoring a calorific value of a fuel determined for the burner (16). The invention further relates to a furnace system (10), and to a control unit (24).

The invention provides device for diversion of quenching exhaust gas and diversion method, exhaust gas chamber is located at top of quenching chamber; quenching chamber is fixedly connected to exhaust gas chamber through partition; support plate in lifting assembly is fixedly connected to side of partition, motor in exhaust assembly is fixedly connected to slider in lifting assembly, two adjacent sides of quenching chamber are fixedly connected to lower surface of support plate through triangular support frame; sealing brushes are located on two adjacent sides of exhaust chamber, gas detector is located inside exhaust chamber on one side near the top, exhaust cylinder is located at center of upper surface of top of exhaust chamber, first end of slider support column and motor support seat are respectively located on upper surface of support plate, second end is fixedly connected with lower surface of baffle through cylindrical hole of slider.