Method for producing Chinese red pine chemical pulp

A technology of chemical pulp and production method, applied in papermaking, textiles and papermaking, pulping with inorganic alkali, etc., can solve the problems of high energy consumption, low pulp quality, large production scale, etc., and achieve low energy consumption, Excellent slurry quality and stable kappa value
CN101100820AInactive Publication Date: 2008-01-09YUEYANG FOREST & PAPER CO LTD
2 Cites 17 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YUEYANG FOREST & PAPER CO LTD
Publication Date
2008-01-09
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to Chinese red pine chemical pulp manufacturing method. It includes the following steps: filling chip and black liquor at the same time; replacing the black liquor with warm cooking liquor; replacing the hot cooking liquor with the warm one; utilizing the cooking liquor to heating up 165-172 deg.C and holding; replacing the warm cooking liquor with the filtered black liquor while H gene reach 800-1200; transmitting the slurry into blowing kettle.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to a production method of chemical cellulose pulp in the papermaking process, in particular to a production method of masson pine chemical pulp. Background technique:

[0002] In the kraft chemical pulping process, a variety of production processes have been developed, such as continuous cooking, vertical pot intermittent steam cooking, steaming ball direct steam cooking and other processes.

[0003] Chinese Patent [Application No.] 90108267, entitled batch cooking method and method and equipment for displacing liquid from the digester, discloses a displacement cooking scheme: after cooking the cellulosic material, keep the delignified pulp While the column is substantially intact, it is quantified under pressure by means of a first volume fraction of cryogenic liquid pumped into the top of the digester pulp column in the digester and a second volume fraction of said cryogenic liquid pumped into the bottom of the digester displa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More