Longking Environmental Protection has obtained patents related to slurry pipeline identification, including methods for slurry pipeline status recognition. These methods are efficient and widely applicable.

On March 29, news from the National Intellectual Property Administration indicates that Fujian Longking Environmental Protection Co., Ltd. has applied for a patent titled “A Method and Device for Identifying the Status of Slurry Supply Pipelines,” with authorization announcement number CN116502159B, and the authorization announcement date is March 27, 2026. The application publication number is CN116502159A, the application number is CN202310472751.2, the application publication date is March 27, 2026, and the application date is April 27, 2023. The inventors are Zeng Shuilin and Dong Qingwu, and the patent agency is Beijing Jijia Intellectual Property Agency Co., Ltd., with patent agent Hou Shan. The classification numbers are G06F18/2431, G06F17/16, and G06N20/00.

The patent abstract shows that this invention relates to a method and device for identifying the status of slurry supply pipelines, which includes: obtaining n-dimensional detection data of the slurry supply pipeline; the n-dimensional detection data includes specified parameter values of the slurry supply pipeline at n different moments; multiplying the n-dimensional detection data by a preset transformation matrix to obtain a target vector; the preset transformation matrix is calculated based on a first matrix and a second matrix; the first matrix includes n-dimensional detection data samples of the slurry supply pipeline in N pipeline statuses; the second matrix includes coordinates of the N pipeline statuses in an M-dimensional space; where M≥N‑1, N≥2; determining the status of the slurry supply pipeline based on the target vector and the coordinates of the N pipeline statuses in the M-dimensional space. Based on this, the invention has high identification efficiency and can be applied to industrial control machines such as PLC and DCS, with a wide range of application scenarios.

Longking Environmental Protection was founded on February 23, 1998, and was listed on the Shanghai Stock Exchange on December 29, 2000, with both its registered and office addresses in Longyan City, Fujian Province. It is a leading enterprise in the domestic atmospheric environmental protection equipment manufacturing industry, with core businesses covering environmental protection equipment such as dust removal and desulfurization, possessing advantages in the entire industrial chain.

Longking Environmental Protection’s main business includes dust removal, desulfurization, denitrification, material transportation, desulfurization operation, and general contracting for power plant projects, categorized under Shenwan industry as Environmental Protection - Environmental Protection Equipment II - Environmental Protection Equipment III, involving concepts such as PM2.5, new materials, and ecological forestry.

In 2025, Longking Environmental Protection’s operating revenue reached 11.872 billion yuan, ranking first among two companies in the industry, far exceeding the second place, Xuedilong, with 1.398 billion yuan, while the industry average and median were both 6.635 billion yuan. Among its main business, the proportion of dust collectors and supporting equipment and installation accounted for 38.65%, making it the primary source of income. In terms of net profit, Longking Environmental Protection achieved 1.108 billion yuan in 2025, also ranking first in the industry, with the second place, Xuedilong, at 152 million yuan, and the industry average and median both at 630 million yuan.

Recent patent information of Fujian Longking Environmental Protection Co., Ltd. is as follows:

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Editor: Xiao Lang Kuaibao