4 results about "Carbon dioxide increased" patented technology

The utility model discloses a greenhouse carbon dioxide release-increasing blending system, which belongs to the technical field of greenhouse planting and comprises a controller, a carbon dioxide liquefaction storage tank, a carbon dioxide conveying main pipeline, a pressure regulating electromagnetic valve, a planting area blending electromagnetic valve, a planting area carbon dioxide concentration sensor and a planting area carbon dioxide distribution pipe. The carbon dioxide liquefaction storage tank is connected with the planting area allocation electromagnetic valve through a carbon dioxide conveying main pipeline, the planting area allocation electromagnetic valve is connected with the planting area carbon dioxide distribution pipe through a carbon dioxide conveying branch pipeline, and the planting area carbon dioxide concentration sensor transmits carbon dioxide concentration information to the controller. And the controller regulates and controls the pressure regulating electromagnetic valve and the planting area allocation electromagnetic valve. According to the application, the maximum concentration of carbon dioxide in the greenhouse planting area can reach 1000ppm, the concentration can be accurately controlled within a set concentration range according to the needs of planted crops, and the method has the characteristics of being accurate in carbon dioxide concentration regulation and control, safe and reliable.

The application discloses a method for constructing an internal dumping site based on a fly ash-based cementing material carbon dioxide storage, and utilizes the cementing properties of fly ash of a pit mouth coal-fired power plant to prepare a fly ash-based cementing material with super high content, and utilizes the high-strength fly ash-based cementing material to construct a carbon dioxide storage, and utilizes a cement-free low-strength fly ash-based cementing material to backfill an open-pit mine pit, so that the resource utilization and efficient collaborative disposal of fly ash solid waste are realized; the carbon dioxide storage is constructed in the internal dumping site space, the open-pit mining space is effectively utilized, and the problem of insufficient material for land reclamation backfilling in the late mining stage is solved; the carbon dioxide storage reinforced by the anchor rod prestress has high strength and large internal space, the mine pit bottom plate impermeable layer and the overlying clay cover layer increase the airtightness, and the safe and efficient large-scale storage of critical state carbon dioxide is realized; the fly ash-based cementing material can mineralize carbon dioxide in a humid environment, increases the carbon dioxide storage amount, and improves the carbon dioxide storage strength and airtightness.

A method for retaining the freshness of cut cabbage according to the present invention includes: a step (I) for storing cut cabbage (A) and an atmosphere adjusting agent package (B), which has oxygen absorbing capacity, in a packaging material (C) to obtain a vegetable package (X); and a step (II) for holding the vegetable package (X). In step (I), the vegetable package (X) satisfies the following requirements (i) and (ii). Requirement (i) is that the ratio of the oxygen reduction rate to the oxygen exchange rate is 0.4 to 2.0. Requirement (ii) is that the ratio of the rate of carbon dioxide increase to the rate of carbon dioxide exchange is 0.2 to 2.0.

Provided is a method for maintaining the freshness of cut lettuce, said method comprising: a step (I) for accommodating cut lettuce (A) and an atmosphere adjuster package (B) that has an oxygen absorption ability in a packaging material (C), thereby obtaining a vegetable package (X); and a step (II) for holding the vegetable package (X), wherein in the step (I), the vegetable package (X) satisfies requirement (i) and requirement (ii). Requirement (i) is that the ratio of an oxygen reduction rate to an oxygen exchange rate is 2.0-4.0. Requirement (ii) is that the ratio of a carbon dioxide increase rate to a carbon dioxide exchange rate is 2.0-4.0.