System for supplying heat by means of stratum coal in-place slurrying and method for supplying power generation heat by means of stratum coal in-place slurrying
US11286174B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Aug 17, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
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 p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.