13 results about "Bog" patented technology

Carbon dioxide re-liquefaction may be provided by a system capable of receiving a vented boiled off gas stream from a storage vessel at a first compressor; compressing the vented BOG stream at the first compressor into a first compressed BOG stream at a first pressure and a second compressed BOG stream at a second pressure, greater than the first pressure; cooling the first compressed BOG stream in a heat exchanger to produce a liquid stream by: cooling, via a refrigerant unit, the second compressed BOG stream to produce a first cold stream, of a temperature less than that of the first compressed BOG stream; exchanging heat from the first compressed BOG stream against tire first cold stream; and returning the liquid stream to the storage vessel.

FIELD: agriculture.SUBSTANCE: used in growing plants in phytomodules, in “carpet” and container vegetal walls. The substrate for growing plants in vertical phytostructures includes expanded vermiculite, zeolite-containing tripoli from the Khotynetsky deposit, and deoxidized high-moor peat, in the stated quantitative ratio.EFFECT: production of light, nutritious, loose, breathable soil that retains moisture well, contains silicon necessary for plants in a form accessible to them, and has a high ion-exchange capacity.1 cl, 1 tbl, 2 ex

This application provides a method for improving the thermal efficiency of a BOG reliquefaction system, comprising: analyzing the interaction between energy loss and temperature difference values ​​using a support vector regression algorithm to obtain a balance model between energy loss and temperature difference; optimizing the heat transfer temperature difference control parameters using a gradient descent algorithm for the adjusted compression parameter set to obtain an optimized temperature difference control scheme; simulating the overall system efficiency under the interaction of equipment using the optimized temperature difference control scheme to determine whether the simulated efficiency meets a preset standard; if the simulated efficiency does not meet the preset standard, iteratively updating the parameters and adjusting the optimization path according to the energy loss reduction requirement to obtain an iteratively optimized path; applying the iteratively optimized path to the gas reliquefaction system in real time to determine whether the energy consumption cycle is broken, and obtaining the final system thermal efficiency index.

The application provides a method and system for controlling the generation of BOG boil-off gas, comprising the following steps: S1, analyzing and obtaining all influence parameters related to the generation of BOG boil-off gas; S2, screening all influence parameters by using a preset filter to obtain the influence parameters that can be calculated, adjusted and most economical; and S3, taking the screened influence parameters as adjustable parameters to suppress the generation of BOG boil-off gas. The application suppresses the generation of BOG boil-off gas, and reduces the generation of BOG boil-off gas from the source before the recovery of BOG boil-off gas.

The present application relates to the technical field of image processing, in particular to a peat bog information extraction method and system based on GIS remote sensing image. The method collects multi-temporal optical remote sensing image, DEM data and pixel precipitation, pre-processes the multi-temporal optical remote sensing image, and performs semantic segmentation to identify the region of interest; the DEM data is analyzed for elevation characteristics to extract pixel slope and pixel convergence accumulation, the precipitation uniformity is calculated based on the pixel precipitation, and the pixel slope and pixel convergence accumulation are weighted and fused to screen the peat formation potential area; the coupling delay index is calculated based on the time delay of the vegetation green peak and the water supply trend peak value to screen the peat bog suspected area; the area threshold is screened to obtain the target peat bog area and output the result. The present application combines the differences between peat bog and ordinary bog in multi-dimensional characteristics, extracts patches with peat layer characteristics, and avoids misjudgment of peat bog relying on spectral feature recognition.

This disclosure relates to a BOG reliquefaction system, a method for reliquefying BOG in a reliquefaction system, and a method for operating a BOG reliquefaction system. The BOG reliquefaction system includes at least one liquefied natural gas (LNG) container, a BOG preheater, at least one BOG compressor having a BOG compressor cooler, and a BOG recondenser having a refrigeration cycle. The BOG reliquefaction system includes a separate liquid circuit with circulation of a liquid phase heat transfer fluid (HTF) to preheat the BOG from the LNG container before it enters the BOG compressor. The separate liquid circuit includes: a liquid pump configured to pump the HTF; a BOG preheater configured to perform heat exchange between the BOG and the HTF; a BOG recondenser located downstream of the BOG preheater; and a liquid trimming heater located downstream of the BOG recondenser configured to heat the HTF.

This application relates to the fields of remote sensing image processing and ecological environment monitoring technology, and discloses a method for extracting peat bog information based on the dense temporal characteristics of multi-source remote sensing. The method includes acquiring time series of microwave radar and optical vegetation index, performing alignment and cleaning, extracting low-frequency and continuous first-order derivative sequences from the microwave radar to generate temporal basis features; extracting historical delay features for effective optical observation times, splicing the basic state term and derivative modulation product term to generate a bilinear distributed lag observation matrix; performing scale unification processing on the lag observation matrix, constructing a diagonal regularized matrix based on time-lapse attenuation characteristics, and solving for the solution vector; calculating the normalized asymmetric hysteresis intensity and reconstruction quality factor, and combining dual thresholds to determine the output distribution data. This invention incorporates the physical hysteresis effect of hydrological evolution into the computational framework, overcoming multicollinearity and observation sparsity problems, and achieving high-precision extraction of peat bogs.

The invention relates to a method (100) for reliquefying a BOG stream (B) drawn from a storage tank (T) for liquefied gas, comprising the steps: a1) extracting liquid (F1) from a liquid phase of the storage tank (T), a2) evaporating the liquid (F1) to produce an evaporated liquid (F2), b) introducing the evaporated liquid (F2) into the BOG stream (B) to generate a mixed BOG stream (BM), c) compressing the mixed BOG stream (BM) to a predetermined final compression pressure to produce a compressed mixed BOG stream (BMv), d) condensing the compressed mixed BOG stream (BMv) to produce a condensed compressed mixed BOG stream (BMvk), in particular with a condenser (46).

A method for managing BOG comprising providing one or more receiving tanks, each receiving tank comprises a condensation reserve amount of liquefied gas and a bottom distribution header. The header comprises a length of at least 10% of a length of the receiving tank and (ii) a plurality of openings arranged along the length of the distribution header. At least one opening is arranged per meter along the length of the bottom distribution header. The method further comprises providing boil-off-gas (BOG) to at least one receiving tank via the plurality of openings of the header; recondensing the BOG in the at least one receiving tank using the condensation reserve amount of liquefied gas; and terminating the provision of the BOG before pressure of the at least one receiving tank exceeds a pressure threshold of that tank.

This invention discloses a swamp sampling device for geological exploration, comprising an outer shell, a refrigerated box, and two tracks. The refrigerated box is fixedly connected to the left side of the outer shell. The two tracks are symmetrically arranged front and rear and are both mounted on the outer shell. An opening is provided at the bottom of the outer shell, and a feed inlet is provided on the right side of the refrigerated box. An opening and closing cylinder is installed on the front side of the outer shell near the left side, and a pull rope is fixedly connected to the power output shaft of the opening and closing cylinder. An opening and closing plate is hinged on the right side of the refrigerated box near the bottom. Through the cooperation of components such as the component mounting plate, active motor, limiting plate, threaded cylinder, limiting rod, limiting ring, inclined plate, moving block, central shaft, meshing block, welding rod, pressure block, hinge block, swing rod, and movable spring, this invention enables the pressure block to slowly push the sample out of the inner cavity of the thin-walled soil sampler when the sample is brought into the inner shell, thus avoiding shearing damage to the sample.