The present invention provides a system for supplying heat by means of stratum coal in-place slurrying and a method for supplying power generation heat by means of stratum coal in-place slurrying, belonging to the technical field of ground-source well heat exchange. The system comprises a stratum coal slurrying device, a mid-deep well casing device and a heat exchange device. The stratum coal slurrying device comprises a water inlet pump and a coal slurry pump, which are connected to a directional slurry preparing drill through pipelines, respectively. The mid-deep well casing device comprises a vertically buried pipe, and a heat-insulating inner pipe that is coaxial with the vertically buried pipe and inserted into the vertically buried pipe. A microporous pipe assembly is arranged on the bottom of the heat-insulating inner pipe. An electric heater is arranged in the microporous pipe assembly, an annular cavity is formed between the vertically buried pipe and the heat-insulating inner pipe, and a power wire connected to the electric heater is arranged in the annular cavity. The coal slurry pump is connected to the annular cavity. The heat exchange device comprises a water outlet pipe that is inserted into the heat-insulating inner pipe and connected to the microporous pipe assembly. The present invention can directly combust the underground coal to generate heat energy to realize heat energy conversion, and the process is clean and harmless.

The mixing device for mixing a powder with a pressurized gas, comprising a mixing chamber (20) with an inlet area (22), which has at least one inlet opening (24), by way of which powder and/or pressurized gas and/or a mixture thereof may be introduced into the mixing chamber (20), and at least one outlet area (26), which is designed for withdrawing from the mixing chamber (20) a main flow (HR) of a gas or powder or a powder and gas mixture directed along the mixing chamber (20) which essentially extends from the inlet area (22) to the outlet area (26), characterized in that a regulating device (10) is arranged along and/or in continuation of the main flow (HR), regulating the main flow (HR) of the gas or powder or powder and gas mixture.

The present invention provides a system for supplying heat by means of stratum coal in-place slurrying and a method for supplying power generation heat by means of stratum coal in-place slurrying, belonging to the technical field of ground-source well heat exchange. The system comprises a stratum coal slurrying device, a mid-deep well casing device and a heat exchange device. The stratum coal slurrying device comprises a water inlet pump and a coal slurry pump, which are connected to a directional slurry preparing drill through pipelines, respectively. The mid-deep well casing device comprises a vertically buried pipe, and a heat-insulating inner pipe that is coaxial with the vertically buried pipe and inserted into the vertically buried pipe. A microporous pipe assembly is arranged on the bottom of the heat-insulating inner pipe. An electric heater is arranged in the microporous pipe assembly, an annular cavity is formed between the vertically buried pipe and the heat-insulating inner pipe, and a power wire connected to the electric heater is arranged in the annular cavity. The coal slurry pump is connected to the annular cavity. The heat exchange device comprises a water outlet pipe that is inserted into the heat-insulating inner pipe and connected to the microporous pipe assembly. The present invention can directly combust the underground coal to generate heat energy to realize heat energy conversion, and the process is clean and harmless.

System for the processing of organic waste and products, which is equipped with, at least, one cylindrical cavity of treatment which is arranged with a loading area and a unloading area of waste and an entrance and exit of vapor. Inside the cylindrical cavity, a dragging spindle with direction of advance from the loading area to the unloading area is installed. The axis of the dragging spindle is equipped with mixing blades which conform a mixing spindle with a direction of advance opposite to that one of the dragging spindle.

In one aspect, the present disclosure involves a re-aeration device and re-aeration method for constructed wetland. In one aspect, the re-aeration device comprises a re-aeration pipe and a windmill. The re-aeration pipe has a tubular structure with openings at both ends; one end inserts into the wetland substrate, and the other end connects with the windmill for receiving and accelerating air flow. The re-aeration pipe may also contain several telescoped or parallel arranged pipes with openings at both ends as well as with different pipe diameters and lengths, which connect with the windmill to form the re-aeration device. The present disclosure also provides a method of re-aeration for constructed wetlands by using the above-mentioned device. The re-aeration device provided herein has features of being simple in structure, environment friendly, and low-cost. In one aspect, the re-aeration method is characterized as simple, practicable, energy-efficient, environment friendly, low-cost, widely applicable, and having good effect and high performance on re-aeration.

The mixing device for mixing a powder with a pressurized gas, comprising a mixing chamber (20) with an inlet area (22), which has at least one inlet opening (24), by way of which powder and/or pressurized gas and/or a mixture thereof may be introduced into the mixing chamber (20), and at least one outlet area (26), which is designed for withdrawing from the mixing chamber (20) a main flow (HR) of a gas or powder or a powder and gas mixture directed along the mixing chamber (20) which essentially extends from the inlet area (22) to the outlet area (26), characterized in that a regulating device (10) is arranged along and/or in continuation of the main flow (HR), regulating the main flow (HR) of the gas or powder or powder and gas mixture.