2results about How to "Effective cracking" patented technology

The application provides a method for improving the yield of oxygen-containing compounds in low-rank coal-derived soluble matters, and belongs to the technical field of low-rank coal pretreatment, and comprises the following steps: first, performing ozone oxidation pretreatment on low-rank coal to obtain modified low-rank coal; using cobalt acetate, copper acetate and iron acetylacetonate as a cobalt source, a copper source and an iron source respectively, using hydrazine hydrate as a strong reducing agent, and using a one-pot hydrothermal method to obtain magnetic Co-CuFe2O4 nanospheres; and using the prepared Co-CuFe2O4 nanosphere catalyst to perform catalytic ethanolysis reaction on the low-rank coal subjected to ozone oxidation pretreatment. In the application, appropriate ozone oxidation pretreatment can effectively improve the activity of the low-rank coal, and when the magnetic Co-CuFe2O4 nanospheres are applied to catalytic ethanolysis reaction of the low-rank coal subjected to ozone oxidation pretreatment and catalytic ethanolysis reaction of low-rank coal-related model compounds, the magnetic Co-CuFe2O4 nanospheres all exhibit excellent catalytic activity, higher-yield soluble components can be obtained, the yield of oxygen-containing compounds in the derived soluble matters is improved, and efficient and high-value utilization of the low-rank coal is realized.

The utility model provides a silica gel repair mortar composite material layer which comprises a composite material layer body, and the composite material layer body comprises a mortar layer, a first connecting keel layer, a second connecting keel layer, a first silica gel layer, a second silica gel layer, a first waterproof layer, a second waterproof layer, a first outer decoration layer and a second outer decoration layer. The first connecting keel layer is arranged between the mortar layer and the first silica gel layer, and the second connecting keel layer is arranged between the mortar layer and the second silica gel layer, so that the bonding area between the mortar layer and the first silica gel layer and the bonding area between the mortar layer and the second silica gel layer are enlarged, and the connecting strength between the mortar layer and the first silica gel layer and the connecting strength between the mortar layer and the second silica gel layer are improved; and the effective structural layer cracks.